report 4

MCDCM
MULTIDISCIPLINARY CENTER FOR THE DEVELOPMENT OF CERAMIC MATERIALS
REPORT 4
PARTIAL REPORT OF THE MCDCM ACTIVITIES COVERING THE BASIC
RESEARCH , TECHNOLOGICAL RESULTS AND EDUCATIONAL ACTIVITIES
PERIOD FROM NOVEMBER 2003 TO MARCH 2005
MARCH 31, 2005
REPORT (4) – MCDCM
1. Overview
This report encompasses all the activities developed in the center during this
fourth running year. This report shows that in this third year the activities of the
center were as intense as in former year for all levels, including the scientific
production, innovation activities as well as the continuous education and
dissemination of knowledge to the society. As described in this report, in the third
year the advances in the research projects was compared with former two years.
The productivity of the majority of the groups has been improved year by year,
demonstrating that the synergy of the groups by means of collaborations is the key
factor. As stated in the former report, the collaborations among members of the
center and with other researchers not belonging to the center in the national and
international level can be extracted in this report. The members of the center have
been published about 178 papers being 169 in international periodicals and about
9 in national periodicals. Considering the several research areas of the Research
Division, the number of papers per area was: Chemical synthesis = 78;
Semiconductors and Ferroelectric Materials = 54; Optical and Electrochromic
Materials = 24; Crystal Growth and Non-Crystalline Materials = 12; and Design,
Fabrication and Characterization of Microdevices Based on Magnetic and
Superconducting Thin Films = 10. Figure 1 shows the relative productivity by
research lines.
As indicated by the total number of papers, the scientific production still very
good. We can observe also that the number of papers in nanostructured materials
increased and nowadays is na important research field in the basic research
division . Besides this remarkable performance, other good results that we get
during this period were the developments of new partners. For instance we started
interaction with Prof. Michael Graetzel, from EPFL Switzerland, in the field of
nanostructured materials for solar cell technology. We start also interaction with
Prof. Michel Aegeter from INM Germany, aiming the development of
nanostructured semiconductors oxides thin films for electrochromic application. In
this period we consolidated the interaction with the Prof. Juan Andres, from Spain,
regarding theoretical study of metal oxides. The driving force for this new
international collaboration was the symposium organized in the MRS Spring
meeting of 2004 in San Francisco. In this meeting we showed that we can organize
a high level symposium and that our work in nanostructured materials is of
international level, allowed to us start this kind of interaction.
The results in the Innovation Division of the Center are growing with other
companies join to the center by means of technological research projects. We
started in this period the creation of two spin-off companies in collaboration with
former students of the center. One of this companies are related to material and
chemical characterization and the other are involved with the development of
ceramics thin films for corrosion protection and surface modification of glasses and
1
stainless steel. It is important to point out also that we start projects in
nanotechnology with Brazilian (CSN) and multi-national (Faber-Castell) companies,
in order to apply ceramics nanoparticles in traditional products. The main idea
behind these projects is increase the performance of products and process using
nanoparticles
The continuous education and dissemination division of the center has increased
and diversified the numbers of activities reaching a well-established program
Many diversified activities like hosting teachers and high school students, basic
courses for craftsman located in several locations, production of educational
video, linking PhD students to industrial sector among others.
2
Chemical Synthesis
Semiconductors and Ferroelectric Mater.
Optical and Electrochromic Mater.
Crystal Growth
Design, Fabrication
30.1%
13.9%
6.94%
5.21%
43.9%
Figure 1 – Relative production for the fourth year (2003-2005).
3
1.2 – Team List
PRINCIPAL RESEARCHERS
NAME
INSTITUTION
POSITION/RESPONSIBILITY
E. LONGO
UNESP
Center Director
J.A. VARELA
UNESP
Innovation Division
A.C. HERNANDES
USP - IFSC / São Carlos
Continuous Education for Teachers
L.O.S. BULHÕES
UFSCar
Electrochromic and Optical Materials
J.B. BALDO
UFSCar
Refractories and Corrosion
F.M.A. MOREIRA
UFSCar
Superconductors and Magnetic Materials
E.C. PEREIRA
UFSCar
Semiconductor and Eletrochromic
E.R. LEITE
UFSCar
Ferroelectric Thin Films and Chemical
Synthesis
V.R. MASTELARO
USP / IFSC
Non-Crystalline Materials and Structural
Characterization.
M. CILENSE
UNESP
Semiconductors
and
Ferroelectric
Materials and Electroceramic Devices
R. MUCCILLO
IPEN
Intragranular phenomena in Ceramic
Oxides Technology: Development of
Ceramic Sensors
E. MUCCILLO
IPEN
Intragranular phenomena in Ceramic
Oxides Technology: Development of
Ceramic Sensors
R. JARDIM
IFUSP
Magnetic Materials
M.A. ZAGHETE
UNESP
Powder Synthesis
C.O. PAIVA-SANTOS
UNESP
XRD and Rietveld Method
4
SENIOR RESEARCHERS
NAME
INSTITUTION
SUBPROJECT
W. LIBARDI
UFSCar/DEMa
Vice Coordinator - Refractory Laboratory
L. A. PERAZOLLI
UNESP
Semiconductors
A.J.A. OLIVEIRA
UFSCar
Magnetic Materials
J.O.A. PASCHOAL
IPEN
Continuous Education for Workers and
Ceramic Tiles
P.R. BUENO
UNESP
Nanostructured
Energy
Materials for Clean
JUNIOR RESEARCHERS
NAME
INSTITUTION
SUPERVISOR
M. ESCOTE
UFSCar
E. LONGO
F. I. M.COSTA
UFSCar/LIEC
L. O. S. BULHÕES
M.C. SANTOS
UFSCar/LIEC
L. O. S. BULHÕES
F. J. SANTOS
UNESP
J. A. VARELA
S. CARTREEDGE
UNESP
J.A. VARELA
M.R.B. ANDREETA
USP/IFSC
A.C.HERNANDES
M.I.B.BERNARDI
USP/IFSC
A.C.HERNANDES
C. A. CARDOSO
GMD/ DF / UFSCAR
F.M. ARAÚJO-MOREIRA
A. A. CAVALHEIRO
UNESP
E. LONGO
A. Z. SIMÕES
UNESP
E. LONGO
I.C. COSENTINO
IPEN
R.MUCCILLO
F.C. FONSECA
IPEN
R.MUCCILLO
H.M. VIANA
IPEN
R. MUCCILLO
J.S. COSTA
DEMa/UFSCar
J.B. BALDO
M. M. VILLULLAS
LIEC/UFSCAR
L.O.S. BULHÕES
5
Ph.D., M.Sc. AND UNDERGRADUATE STUDENTS FORMED IN THE
FOURTH YEAR
NAME
INSTITUTION ADVISOR
DATE
LEVEL
V.F. MONTEIRO
UFSCar/LIEC E. LONGO
10/2003
PhD
F. VERNILLI
UNESP
10/2003
PhD
D. Z. FLORIO
I.T. WEBER
C. VILA
IPEN
R. MUCCILLO
UFSCar/LIEC E.R.LEITE
UFSCar/LIEC E. LONGO
09/2003
10/2003
10/2003
PhD
PhD
M.Sc.
A. P. MACIEL
UFSCar/LIEC E.R. LEITE
10/2004
PhD
M.S.C.CÂMARA
UFSCar/LIEC E.LONGO
06/2004
PhD
W.K. BACELAR
UFSCar/LIEC E.LONGO
03/2005
PhD
A. SPINELI
USCar/LIEC
E. LONGO
03/2005
PhD
M.F.GURGEL
USCar/LIEC
E. LONGO
03/2005
PhD
F.L. de SOUZA
UFSCar/LIEC E.R. LEITE
03/2003
M.Sc.
T.R. GIRALDI
UFSCar/LIEC J.A. VARELA
02/2004
M.Sc.
K.P. LOPES
UFSCar/LIEC E.R. LEITE
04/2004
M.Sc.
V.C. ALBARICI
UFSCar/LIEC E.LONGO
07/2004
M.Sc.
G.P. MABRINI
UFSCar/LIEC E.LONGO
08/2004
M.Sc.
J.A. VARELA
Ph.D. STUDENTS
NAME
INSTITUTION
ADVISOR
T. R.GIRALDI
UFSCar/LIEC
J.A. VARELA
P.R. LUCENA
UFSCar/LIEC
J.A. VARELA
F.L. SOUZA
UFSCar/LIEC
J.A. VARELA
S.H.B.S. LEAL
UFSCar/LIEC
E. LONGO
M. O. ORLANDI
UFSCar/LIEC
E. LONGO
S.R. LÁZARO
UFSCar/LIEC
E. LONGO
C.M. BARRADO
UFSCar/LIEC
E. LONGO
M. ZAMPIERI
UFSCar/LIEC
E. LONGO
R.C.LIMA
UFSCar/LIEC
E. LONGO
S.K. TADOKORO
IPEN
E. N. S. MUCCILLO
N. H. SAITO
IPEN
E. N. S. MUCCILLO
R. A. ROCHA
IPEN
E.N.S. MUCCILLO
D. Z. FLORIO
IPEN
R. MUCCILLO
I.A. SOUZA
UNESP
M. CILENSE
V.P.B. MARQUES
UNESP
M. CILENSE
R.F.C. MARQUES
UNESP
C.O.P.SANTOS
6
A.V.C. ANDRADE
UNESP
C.O.P.SANTOS
N. ANSEI JUNIOR
UNESP
J. A. VARELA
A. H. M.GONZÁLEZ
UNESP
J.A. VARELA
R. T. S. OLIVEIRA JR.
UFSCar/LIEC
E. C. P. SOUZA
E.C. F. SOUZA
UNESP
J.A. VARELA
D.K.A. ALMEIDA
UFSCar/LIEC
J.A.VARELA
L.P.S. SANTOS
UFSCar/LIEC
E.R. LEITE
E. C. PARIS
UFSCar/LIEC
E. R.LEITE
M.R.B. ANDREETA
IFSC/USP
A.C. HERNANDES
A.L. MARTINEZ
IFSC/USP
A.C. HERNANDES
C.R. FERRARI
IFSC/USP
A.C. HERNANDES
C.N. SANTOS
L.J. Q. MAIA
E.R.M. ANDREETA
USP/IFSC
USP/IFSC
IFSC/USP
A.C. HERNANDES
V.R. MASTELARO
A.C. HERNANDES
C.A.C. FEITOSA
IFSC/USP
VALMOR R. MASTELARO
I.S.MEDEIROS
USP/IFSC
A. C. HERNANDES
J. S. DA COSTA
UFSCar/DEMa
J. B. BALDO
A. J. C. LANFREDI
GMD / DF / UFSCar
F.M. Araújo-Moreira
G.GASPAROTTO
UNESP
M. A. ZAGHETE
R.S. CONSALVES
UNESP
M. A. ZAGHETE
R. T. S. OLIVEIRA JR.
M. CARRIZO
UFSCar/LIEC
UFSCar/LIEC
E. C. PEREIRA
E. C. PEREIRA
F. T. STRIXINO
UFSCar/LIEC
E. C. PEREIRA
7
M.Sc. STUDENTS
NAME
Institution
ADVISOR
F.C. PICON
UFSCar/LIEC
E. LONGO
L.G.P. SIMÕES
UFSCar/LIEC
E. LONGO
R. GONÇALVES
UFSCar/LIEC
E. LONGO
E.CAPRONI
IPEN
R. MUCCILLO
T.B. P.L. SOUZA
LIEC/UFSCar
E. C. P. SOUZA
F. T. STRIXINO
UFSCar/LIEC
E. C. P. SOUZA
V.C. FERNANDEZ
UFSCar/LIEC
L.O.S. BULHÕES
P. D. Marreto
UFSCar/LIEC
L. O. S. BULHÕES
K.S. FREITAS
UFSCar/LIEC
L.O.S. BULHÕES
F.R. DIAS
IFSC/USP
A. C.HERNANDES
C.N. SANTOS
IFSC/USP
A. C.HERNANDES
L.J.Q. MAIA
IFSC/USP
V. R. MASTELARO
M. R. FREITAS
USP/IFSC
A. C. HERNANDES
D. A. BONFIM
UFSCar/DEMa
W. LIBARDI
E. ANTONELLI
J. E. de SOUZA
A.J.P. SILVA
USP/IFSC
USP/IFSC
UNESP
A.C. HERNANDES
A.C. HERNANDES
C.O.P.SANTOS
V.H.S. UTUNI
UNESP
C.O.P.SANTOS
W. MALUF JÚNIOR
GMD / DF / UFSCar
A.B. CAMPOS
UNESP
F.M. ARAÚJOMOREIRA
M.A. ZAGHETE
D.M.C. PEREIRA
UNESP
J.A. VARELA
8
UNDERGRADUATE STUDENTS
NAME
INSTITUTION
ADVISOR
F. H. S.RIBEIRO
IPEN
E.N.S. MUCCILLO
J. T. SANTOS
IPEN
R. MUCCILLO
F. PIMENTEL
IPEN
R. MUCCILLO
L. FRANCHI
IPEN
E.N.S. MUCCILLO
S. M. BARRIONUVEVO
UNESP
M.A. ZAGHETE
L.G. SILVA
UNESP
M.A. ZAGHETE
T. CALVO
UNESP
M.A. ZAGHETE
R. TARARAM
UNESP
M. CILENSE
J. L. AMARAL
UNESP
M. CILENSE
R. D. ADATI
UNESP
M. CILENSE
S.G. ANTONIO
UNESP
C.O.P. SANTOS
R. PUTVINSKIS
UNESP
C.O.P. SANTOS
A.L. PEREIRA
UNESP
C.O.P. SANTOS
T. MARTINS
UNESP
L. A. PERAZOLI
V. VINCOLETTO
UNESP
L. A. PERAZOLI
E. NOLASCO
UNESP
J.A. VARELA
C. QUINELATO
UNESP
J.A. VARELA
R. L. S. Mello
UFSCar/LIEC
L. O. S. BULHÕES
J.CÉSAR
UFSCar/LIEC
L.O.S. BULHÕES
J.R. MORAES
UFSCar/LIEC
L.O.S. BULHÕES
D.S. CASALI
UFSCar/LIEC
E.C.P. SOUZA
R. F. Amado
B. G. Marcussi
UFSCar/LIEC
UFSCar/LIEC
E.C.Pereira
E.C.Pereira
R.R.E. GOBELLO
USP/IFSC
A.C.HERNANDES
A. K. COLACITI
USP/IFSC
M.R.B. ANDREETA
GUIMARÃES, M.
UFSCar/DEMa
W. LIBARDI
M. BARROS
GMD/DF/UFSCar
F.M. Araújo-Moreira
D.S. FIGUEIREDO
UFSCar/DEMa
J. B. BALDO
M.V. L. OLIVEIRA
UFSCar/DEMa
J.B. BALDO
UFSCar/LIEC – Universidade Federal de São Carlos – Laboratório Interdisciplinar de Eletroquímica e
Cerâmica
UNESP – Universidade Estadual Paulista/Instituto de Química – Araraquara
UFSCar/DEMa - Universidade Federal de São Carlos – Departamento de Engenharia de Materiais
Educacionais IFSC/USP – Instituto de Física de São Carlos – Universidade de São Paulo – São Carlos
IPEN – Instituto de Pesquisas Energéticas e Nucleares Nucleares - Centro de Ciência e Tecnologia de
Materiais
9
1.3 Results of the Research Division (Basic Research)
List of International and National Publications
1. “Dióxido de Estanho nanoestruturado : síntese e crescimento de nanocristais e
nanofitas” A. P. MACIEL, E. LONGO, E. R.LEITE, Química Nova 26 (6), 855-862
(2003).
1.
“Estudo microestrutural do catalisador Ni/γ-Al2O3 – Efeito da adição de CeO2 na
reforma do metano com dióxido de carbono” A. VALENTINI, L.D. PROBST, N.L.V.
CARREÑO, E.R. LEITE, F.M. PONTES, E. LONGO, W.H. SCHREINER e P.N. LISBOAFILHO, Química Nova 26 (5), 648-654 (2003).
2.
“Theoretical analysis of Water coverage on MgO(001) surfaces with defects and
without F,V and P type vacancies” A.L.ALMEIDA , J.B.L.MARTINS , E. LONGO,
C.A.TAFT, J.MURGICH, F.A. JALBOUT, Journal of Molecular Structure (Theochem)
664-665, 111-124 (2003).
3.
“Synthesis of metal-oxide matrix with embedded nickel nanoparticles by a
bottom-up chemical process” N.L.V. CARRENO, R.C. LIMA, L.E.B. SOLEDADE, E.
LONGO, E.R. LEITE, A. BARISON, A.G. FERREIRA, A. VALENTINI, L.F.D PROBST,
Journal of Nanoscience and Nanotechnology 3 (6), 516-520 (2003).
4.
“Filmes finos de SrBi2Ta2O9 processados em forno microondas” J. S.
VASCONCELLOS, N.S.L.S. VASCONCELOS, S.M. ZANETTI, J.W. GOMES, E. LONGO,
E.R. LEITE, J.A. VARELA, Cerâmica 49, 61-65 (2003).
5.
“Glass transition temperature of heat-treate reline resins”
MACHADO, C.E. GIAMPAOLO, A.C. PAVARINA, E.R. LEITE,
Research 82, 240-244 (2003).
6.
“Physical properties of single-crystalline fibers of the colossal-magnetoresistance
manganite La0.7Ca0.3MnO3” C.A. CARDOSO, F.M. ARAÚJO-MOREIRA, M.R.
ANDREETA, A.C. HERNANDES, E.R. LEITE, O.F. DE LIMA, A.W. MOMBRÚ, R.
FACCIO, Applied Physics Letters 83 (15), 3135-3137 (2003).
7.
“Structural characterization of the V2O5/TiO2 system obtained by the sol-gel
method” C.B. RODELLA, V.R. MASTELARO, Journal of Physics and Chemistry of
Solids 64, 833-839 (2003).
8.
“Structural Studies of a ZrO2-CeO2 doped system” V.R. MASTELARO, V. BRIOIS,
D.M.F. SOUZA, C.L. SILVA, Journal of the European Ceramic Society 23, 273-282
(2003).
9.
“Evaluation of CoAl2O4 as ceramic pigments” D.M.A. MELO, J.D. CUNHA, J.D.G.
FERNANDES, M.I.B. BERNARDI, M.A.F. MELO, A.E. MARTINELLI, Materials Research
Bulletin 38, 1559-1564 (2003).
10
V.M. URBAN, A.L.
Journal of Dental
10. “Characterization of Bi4Ge3O12 single crystal by impedance spectroscopy” Z.S.
MACEDO, A.L. MARTINEZ, A.C. HERNANDES, Materials Research 6 (4), 577-581
(2003).
11. “The influence of oxygen in the photoexpansion of GaGeS glasses” S.H.
MESSADDEQ, V.R. MASTELARO, M. SIU-LI, M. TABACKNIKS, D. LEZAL, A. RAMOS, Y.
MESSADDEQ, Applied Surface Science 205, 143-150 (2003).
12. “Qn distribution in stoichiometric silicate glasses: thermodynamic calculations and
29Si high resolution NMR measurements” J. SCHNEIDER, V.R. MASTELARO, E.D.
ZANOTTO, B.A. SHAKHMATKIN, N.M. VEDISHCHEVA, A.C. WRIGHT, H. PANEPUCCI,
Journal of Non-Crystalline Solids 325, 164-178 (2003).
13. “Evaluation of hair fiber hydration by differential scanning calorimetry, gas
chromatography, and analysis” K.M.S BELLETTI, I.H. FERFERMAN, T.R.O MENDES,
A.D. PIACESKI, V.F. MONTEIRO, N.L.V. CARRENO, A. VALENTINI, E.R.LEITE, E.
LONGO, Journal of Cosmetic Science 54 (6), 527-535 (2003).
14. “Structure Study of Donor Doped Barium Titanate Prepared from Citrate Solutions”
B.D. STOJANOVIC, V.R. MASTELARO, C.O.PAIVA-SANTOS, J.A. VARELA, Science of
Sintering 36, 179-188 (2004).
15. “Study of k and LiNbO3 addition on the final properties of the relaxor pmn
processed by powder blend” A.A. CAVALHEIRO, M.A. ZAGHETE, M. CILENSE, M.
VILLEGAS, J.F. FERNANDEZ, J.A. VARELA, Boletin de la Sociedad Espanhola de
CerAmica y Vidrio 43(3), 653-657 (2004).
16.
“Sintering of tin oxide using zinc oxide as a densification aid” C. R. FOSCHINI, L.
PERAZOLLI, J. A. VAREL, Journal of Materials Science 39(8), 5825-5830 (2004).
17.
“Effect of thermal treatment temperature on the crystallinity and morphology of
LiTaO3 thin films prepared from polymeric precursor method”
A. H. M.
GONZÁLEZ, A. Z. SIMOES, M. A. ZAGHETE, E. LONGO, J. A. VARELA, Journal of
Electroceramics 13(1-3), 353-359 (2004).
18.
“Influence of Ta2O5 on the electrical properties of ZnO- and CoO-doped SnO2
varistors” F. M. FILHO, A. Z. SIMOES, A. RIES, I. P. SILVA, L. PERAZOLLI, E. LONGO, J.
A. VARELA, Ceramics International 30 (8), 2277-2281 (2004).
19. “Electrical properties of screen printed BaTiO3 thick film” B. D. STOJANOVIC, C. R.
FOSCHINI, V. Z. PEJOVIC, V. B. PAVLOVIC, J. A. VARELA, Journal of the European
Ceramic Society 24, 1467-1471 (2004).
20. “Phase formation and characterization of BaBi2Ta2O9 obtained by mixed oxide
procedure” G. C. C. DA COSTA, A. Z. SIMÕES, A. RIES, C. R. FOSCHINI, M. A.
ZAGHETE, J. A. VARELA, Materials Letters 58, 1709-1714 (2004).
11
21. “The role of network modifiers in the production of photoluminescence in CaWO4”
F. R. C. CIACO, F. M. PONTES, C. D. PINHEIRO, E. R. LEITE, S. R. DE LAZARO, J. A.
VARELA, P. S. PIZANI, C. A. PASKOCIMAS, A. G. SOUZA, E. LONGO, Cerâmica 50
(313), 43-49 (2004).
22. “Microstructural investigation of the PZT films prepared from the suspension of
nanocrystalline powders” Z. BRANKOVIC, G. BRANKOVIC, J. A. VARELA, Journal of
the European Ceramic Society 24, 1945-1948 (2004).
23. “Structural effects of Li and K additives on the columbite precursor and 0.9PMN0.1PT powders” J. C. BRUNO, A. A. CAVALHEIRO, M. A. ZAGHETE, M. CILENSE, J. A.
VARELA, Materials Chemistry and Physics 84 (1), 120-125 (2004).
24. “Effect of PbO excess on the formation of lead magnesium niobate perovskite by
the columbite method” A. A. CAVALHEIRO, S. M. BARRIONUEVO, J. C. BRUNO, M.
A. ZAGHETE, M. CILENSE, J. A. VARELA, Materials Chemistry and Physics 84 (1), 107111 (2004).
25. “Influence of oxygen atmosphere on crystallization and properties of LiNbO3 thin
films” A. Z. SIMÕES, M. A. ZAGHETE, B. D. STOJANOVIC, A. H. M. GONZÁLEZ, C. S.
RICCARDI, M. CANTONI, J. A. VARELA, Journal of the European Ceramic Society
24 (6), 1607-1613 (2004).
26. “Potassium niobate thin films prepared through polymeric precursor method” A. Z.
SIMÕES, A. RIES, C. S. RICCARDI, A. H. M. GONZÁLEZ, M. A. ZAGHETE, B. D.
STOJANOVIC, M. CILENSE, J. A. VARELA, Materials Letters 58 (20), 2537-2540
(2004).
27. “Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the
structural properties of SnO2 ceramics” G. BRANKOVIC, Z. BRANKOVIC, M. R.
DAVOLOS, M. CILENSE, J. A. VARELA, Materials Characterization 52 (5), 243-251
(2004).
28. “Dielectric and piezoelectric properties of the mechanochemically prepared PZT
ceramics” Z. BRANKOVIC, G. BRANKOVIC, F. MOURA, J. A. VARELA, Journal of
Materials Science 39 (16-17), 5291-5294 (2004).
29. “Influence of nonuniform critical current density profile on magnetic field behavior
of AC susceptibility in 2D Josephon juntion arrays” F.M. ARAUJO-MOREIRA, W.
MALUF, S. SERGEENKOV, Solid State Communications 131, 759-762 (2004).
30. “Nanocrystals Assembled from the Bottom Up” E. R. LEITE, Encyclopedia of
Nanoscience and Nanotechnology, Edited by H.S.Nalwa , 6 537-554 (2004).
31. “Análise teórica da interação de CO, CO2, e NH3 com ZnO” J.B.L. MARTINS, J.R.
SAMBRANO, L.A.S. VASCONCELLOS, E. LONGO, C.A. TAFT, Química Nova 27 (1),
10-16 (2004).
12
32. “Epitaxial growth
of LiNbO3 thin films
in a microwave oven” N.S.L.S.
VASCONCELLOS, J.S. VASCONCELLOS, V. BOUQUET, S.M. ZANETTI, E.R. LEITE, E.
LONGO, L.E.B.. SOLEDADE, F.M. PONTES, M. GUILLOUX-VIRY, A PERRIN, M.I.
BERNARDI, J.A. VARELA, Thin Solid Films 436, 213-219 (2004).
33. “Thermal transformations of tile clay before and after kaolin addition” F.R.
ALBUQUERQUE, B. PARENTE, S.J.G. LIMA, C.A. PASKOCIMAS, E. LONGO, A.G.
SOUZA, I.M.G. SANTOS, M. FERNANDES, Journal of Thermal Analysis and
Calorimetry 75, 677-685 (2004).
34. “SrBi2Nb2O9 thin films crystallized using a low power microwave oven” S.M.
ZANETTI, J.S. VASCONCELLOS, N.S.L.S VASCONCELOS, E.R. LEITE, J.A. VARELA,
Journal of the European Ceramic Society 24, 1597-1602 (2004).
35. “Strontium titanate films prepared by spray pyrolysis”
G. BRANKOVIC, Z.
BRANKOVIC, J.A. VARELA, E. LONGO, Journal o the European Ceramic Society
24, 989-991 (2004).
36. “Synthesis and Characterization of the β-BaB2O4 Phase Obtained by the
Polymeric Precursor Method” P.P. NEVES, L.J.Q.MAIA, M.I.B. BERNARDI, A.R.
ZANATTA, S.M. ZANETTI, E. R. LEITE, Journal of Sol-Gel Science and Technology 29,
89-96 (2004).
37. “A DFT rationalization of the room temperature photoluminescence of Li2TiSiO5” E.
LONGO, E. ORHAN, V.C. ALBARICII, M T. ESCOTE, Chemical Physics 398 (4), 330335 (2004).
38. “A Raman and dielectric study of a diffuse phase transition in (Pb1xCax)TiO3 thin
films” E. LONGO, F.M.L.PONTES, D.S.L. PONTES, E.R. LEITE, A.J. CHIQUITO, M.A.C
MACHADO; P.S. PIZANNI, J.A. VARELA, Applied Physics A 78, 349-354 (2004).
39. “A simple and novel method to synthesize doped and unoped SnO2 nanocrystals
at room temperature” E. LONGO, E.R. LEITE, E.J.H. LEE, T.R. GIRALDI, Journal of
Nanoscience and Nanotechnology 4 (7), 774-778 (2004).
40. “An investigation of metal oxides which are photoluminescence at room
temperature” E. LONGO, E.R.LEITE, F. M. L. PONTES, E.LEE, J H; R. AGUIAR, D. S. L.
PONTES, M.S.J. NUNES, P.S. PIZANI, F LANCIOTTI JR, T M BOSCHI, J. A VARELA, C.
A. PASKOCIMAS, C. D PINHEIRO, C. A TAFT, Journal of Molecular Structure
(Theochem) 668, 87-91 (2004).
41. “Development of SnO2/Sb-Based Ceramic Pigments” M.I.B.BERNARDI, E.R. LEITE, E.
LONGO, M.M. CONCEIÇÃO, A.G. SOUZA, Journal o Thermal Analysis and
Calorimetry 75, 481-486 (2004).
13
42. “Characterization of BaTi1-xZrxO3 thin films obtined by a soft chemical spincoating techinique” E. LONGO, F. M. PONTES, M.T. ESCOTE, C.C. ESCUDEIRO,
E.R. LEITE, Journal of Applied Physics 96 (8), 4386-4391 (2004).
43. “Characterization of lanthanum-doped bismuth titanate thin films prepared by
polymeric precursor method” E. Longo, A.Z. Simoes; C.S. Riccardi, F. Moura,
Materials Letters 58(22-23), 2842-2847 (2004).
44. “Combined experimental and theoretical study to undestand the
photoluminescence of Sr1-xTiO3-x”E. LONGO, E. ORHAN, F.M. PONTES, M.A.
SANTOS, Journal of Physical Chemistry B 108(26), 9221-9227 (2004).
45. “Combined wet-chemical process to synthesize 65PMN-35PT nanosized powders”
E.LONGO, L.P.S. SANTOS, E.R. LEITE, E. R. CAMARGO, Journal of Alloys and
Compounds 372 (1-2), 111-115 (2004).
46. “Composition and electronic structure of Zn7-xMxSb2O12 (M=Ni and Co) spinel
Compounds” E.LONGO, P.N. LISBOA, C.VILA, M. S. GOES, C. MORILLA SANTOS,
L.GAMA, W.H. SCHREINER, C.O. PAIVA SANTOS, Materials Chemistry And
Physics 85 (2-3), 377-382 (2004).
47. “Density functionall theory calculation of the electronic structure of
Ba0.5Sr0.5TiO3: Photoluminescent properties and structural disorder” E. LONGO,
E. ORHAN, F. M. PONTES, C. D. PINHEIRO, E. R. LEITE, J. A. VARELA, P. S. BOSCHI,
F. LANCIOTTI, A. BELTRAN, J. ANDRES, Journal Physical Review B 69, 12 (2004).
48. “Efeito do Pr2O3 nas propriedades elétricas de varistores a base de SnO2” E
LONGO, L G P SIMÕES, M.O. ORLANDI, A. L. ARAÚJO, M.R.D BOMIO, E.R. LEITE,
J.A. VARELA, Cerâmica 49, 232-236 (2004).
49. “Effect of atmosphere on the electrical properties of TiO2-SnO2 varistor systems”
E.LONGO, V. S. SOUSA, M.R. CASSIA-SANTOS, C.M. BARRADO, Journal of
Materials Science-Materials In Electronics 10, 665-669 (2004).
50. “Effect of heat flux direction on electrical properties of SrNi2Nb2O9 thin films
crystallized using a microwave oven” E.LONGO,
J.VASCONCELOS, N. S.
VASCONCELOS, S.M. ZANETTI, E.R. LEITE, J.A. VARELA, Applied Surface Science
225, 156-161 (2004).
51. “Effects of post-annealing on the dielectric properties o Au/BaTiO3/Pt thin film
capacitors”. E LONGO, E.J.J. LEE, F.M. PONTES; E.R. LEITE, Materials Letters
58(11), 1715-1721 (2004).
52. “Electrical characterization of lanthanum-modified bismuth titanate thin films
obtained by the polymeric precursor method” E.LONGO, S.Z. SIMOES, B.D.
STOJANOVIC, M.A. ZAGHETE, Integrated Ferroelectrics 60, 21-31 (2004).
14
53. “Enhanced electrical property of nanostructured Sb-doped SnO2 thin film
processed by soft chemical method” E.LONGO, E.R. LEITE, M.I.B. BERNARDI, J.A.
VARELA, C.A. PASKOCIMAS, Thin Solid Films 449, 67-72 (2004).
54. “Fatigue-free behavior of Bi3.25La0.75TiO3O12 thin films grown on several bottom
eletrodes by the polymeric precursor method” E. LONGO, A.Z. SIMOES, F. M.
FILHO, Applied Physics Letters 85(24), 5962-5964 (2004).
55. “Ferroelectric phase transition in Pb0.060Sr0.40TiO3 thin films” E.LONGO, S.H.
LEAL, F.M. PONTES, E. R. LEITE, Materials Chemistry and Physics 87, 353-356
(2004).
56. “High oxygen-pressure annealing effects on the ferroelectric and structural
properties of PbZr0.3Ti0.73 thin films” E.LONGO, M.T. ESCOTE, F.M. PONTES, E.R.
LEITE, Journal of Applied Physics 96 (4), 2186-2191 (2004).
57. “Improved activity and stability of Ce-promote Ni/gamma-Al2O3 catalysts for
carbon dioxide reforming of methane” E.LONGO, A .VALENTINI, N.L. V.
CARRENO, E. R. LEITE, R. F. GONÇALVES, L.E. B. SOLEDADE, Y.MANIETTE, L.F.D.
PROBST, Latin American Applied Research 34 (3), 165-172 (2004).
58. “Influence of noble metals on the structural and catalitic properties of Ce-doped
SnO2 systems” E LONGO, I.T. WEBER, A. VALENTINI, L.F.D. PROBST, E.R. LEITE,
Sensors And Actuators B-Chemical 97, 31-38 (2004).
59. “Influence of strontium concentration on the structural, morphological and
electrical properties of lead zirconate titanate thin films” E. LONGO, C.E. F.
COSTA, F.M. PONTES, A.G. SOUZA; E.R. LEITE, Applied Physics A 79 (3), 593-597
(2004).
60. “Investigation of phase transition in ferroelectric Pb0.70 Sr0.30 TiO3 thin films” E.
LONGO, F. M. PONTES, S.H. LEAL, E.R. LEITE, P.PIZANI, P.S. CHIQUITO, J.A.VARELA,
Journal of Applied Physics 96(2), 1192-1196 (2004).
61. “Low temperature crystallization of SrBi2Ta2O9 thin films using microwave oven” E.
LONGO, S.M. ZANETTI, J.S. VASCONCELLES, N.S.L.S. VASCONCELOS, Thin Solid
Films 466 (1-2), 62-68 (2004).
62. “Low-temperature synthesis of single-phase Co7Sb2O12” E.LONGO, M.S.L. BRITO, M
.T. ESCOTE, C. O. P. SANTOS, Materials Chemistry And Physics 88 (2), 404-409
(2004).
63. “Microstructural and optical characterization of CaWO4 and SrWO4 thin films
prepared by a chemical solution method” E. LONGO, M. A. M. A. MAURERA, A.
G. SOUZA, L. E. B. SOLEDADE, F. M. PONTES, E. R. LEITE, J.A. VARELA, Materials
Letters 58, 727-732 (2004).
15
64. “Nonlinear behavior of TiO2 center dot Ta2O5 center dot MnO2 material doped
with BaO and Bi2O3” E. LONGO, V. C. SOUSA, E. R. LEITE, Materials Chemistry
And Physics 85 (1), 96-103 (2004).
65. “Nonohmic behavior ofSnO2-MnO polycrystalline ceramics I. Correlations
between microstructural morphology and nonohmic Features” E. LONGO, P. R.
BUENO, M. O. ORLANDI, L. G. P. SIMOES, E. R. LEITE, Journal of Applied Physics
96(5), 2693-2700 (2004)
66. “On the stabilizing behavior of zirconia: A combined experimental and theoretical
study” E. LONGO, C.R. FOSCHINI, O. TREU, S. A. JUIZ, A. G. SOUZA, J. B. L.
OLIVEIRA, E.R. LEITE, C.A. PASKOCIMAS, J.A. VARELA, Journal of Materials
Science 39 (6), 1935-1941(2004).
67. “Origin of photo luminescence in SrTiO3: a combined experimental and
theoretical study” E. LONGO, E. ORHAN, F. M. PONTES, C. D. PINHEIRO, Journal
of Solid State Chemistry 177 (11), 3879-3885 (2004).
68. “Phase evolution of lead titanate from its amorphous precursor synthesized by the
OPM wet-chemical route” E. LONGO, E. R. CAMARGO, E. R. LEITE, V. R.
MASTELARO, Journal of Solid State Chemistry 177 (6), 1994-2001 (2004).
69. “Photoluminescence in amorphous zirconium titanate” E. LONGO, G.F.G FREITAS,
L.E.B. SOLEDADE, E.R. LEITE, P.S. PIZANNI, T. M. BOSCHI, C.A. PASKOCIMAS, J.A.
VARELA, D.M. MELO, M. CERQUEIRA, R.M. MAGNANI, Applied Physics A 78, 355358 (2004).
70. “Photoluminescence in quantum-confied SnO2 nanocrystals: Evidence of free
exciton decay” E. LONGO, E.J.H. LEE, C. RIBEIRO, T.R. GIRALDI, E.R. LEITE,
Applied Physics Letters 84 (9), 1-6 (2004).
71. “Photoluminescence of the PbTiO3 in amorphous state analyzed by method abinitio periodicy” E. LONGO, S. R. LAZARO, E. R. LEITE, A. BELTRAN, Journal Of
Microscopy-Oxford 43 (3), 644-648 (2004).
72. “Preparation of Pb(Zr,Ti)O-3 thin films by soft chemical route 2004” E. Longo, F. M.
Pontes, E. R. Leite, M. S. J. Nunes, Journal of the European Ceramic Society, 24
(10-11) 2969-2976 (2004).
73. ”Processing effects on nanometric rare earth-doped tin oxides on the synthesis of
methyl vinyl ketone“ E. LONGO, A.P. MACIEL, N.L.V. CARREÑO, P.R. LUCENA, E.R.
LEITE, H.V. FARJADO, A. VALENTINI, L.F.D. PROBST, Reaction Kinetics and Catalysis
Letters 81(2), 211-217 (2004).
74. “Quantitative analysis and classification of AFM images of human hair” E. Longo,
S. P. Gurdem, V. F. Monteiro, M. M. C. Ferreira, Journal of Microscopy-Oxford
215, 13-23 (2004).
16
75. “Room temperature photoluminescence of amorphous BaxSr1-xTiO3 doped with
chromium” E. LONGO, D. M. A. MELO, A. CESAR, A. E. MARTINELLI, Journal of
Solid State Chemistry 177 (3), 670-674 (2004).
76. “Selective synthesis of vinyl ketone over SnO2 nanoparticle catalysts doped with
rare earths” E. LONGO, N.L.V. CARREÑO, H.V. FARJADO, A.P. MACIEL, A.
VALENTINI, F.M.L. PONTES, L.F.D. PROBST, E.R. LEITE, Journal of Molecular Catalysis
A-Chemical 207, 91-96 (2004).
77. “Sintering mechanisms of ZrO2 center dot MgO with addition o TiO2 and CuO” E.
LONGO, R. S. NASAR, M. CERQUEIRA, J. A. VARELA, Ceramics International
30(4), 571-577(2004).
78. “Sol -gel nonhydrolytic synthesis of a hybrid organic-inorganic electrolyte for
application in lithium-ion devices” E. LONGO, F. L. SOUZA, P. R. BUENO, E. R.
LEITE, Solid State Ionics 166 (1-2), 83-88 (2004).
79. “SrBi2Ta2O9 ferroelectric thick films prepared by electrophoretic deposition using
aqueous suspension” E. LONGO, S. M. ZANETTI, J. A. VARELA, E. R. LEITE, Journal
of the European Ceramic Society 24 (8), 2445-2451 (2004).
80. “Structural and electronic properties of PbTiO3 slabs: a DFT periodic study” E.
LONGO, S.L. LAZARO, J.R. SAMBRANO, A. BELTRÁN, Surface Science 552, 149159 (2004).
81. “Study of synthesis variables in the nanocrystals growth behaviour of tin oxide
processed by controlled hydrolysis” E. LONGO, C. RIBEIRO, E. J. H. LEE, T. R.
GIRALDI, Journal of Physical Chemistry B 108 (40), 15612-15617 (2004).
82. “Synthesis and characterization of Al2O3/Cr2O3-based ceramic pigments” E.
LONGO, M.I.B. BERNARDI, S. C. CRISPIM, L. A. P. MACIEL, A. G. SOUZA, M. M.
CONCEIÇÃO, E. R. LEITE, Journal of Thermal Analysis and Calorimetry 75, 475480 (2004).
83. “Synthesis and characterization of spinel pigment CaFe2O4 obtained by the
polymeric precursor method” E. Longo, R. A. Candeia, M. I. B. Bernardi, I. M. G.
Santos, A. G. Souza, Materials Letters, 58, 569-572 (2004).
84. “Synthesis and thermal characterization of zirconium titanate Pigments” E.
LONGO, C. E. F. COSTA, S. C. L. CRISPIM, S. J. G. LIMA, C. A. PASKOCIMAS, V.
J. FERNANDES, A. S. ARAÚJO, I. M. G. SANTOS, A. G. SOUZA, Journal of Thermal
Analysis and Calorimetry 75, 467-473 (2004).
85. “Synthesis of nanocrystalline ytterbium modified PbTiO3” E. LONGO, F. C. D.
LEMOS, E. R. LEITE, D. M. A. MELO, A. O. SILVA, Journal of Solid State Chemistry
177, 1542-1548 (2004).
17
86. “Improvement of the dielectric and ferroelectric properties in superlattice
structure o Pb(Zr,Ti)O3 thin films grown by a chemical solution route” F.M.
PONTES, E LONGO, E.R. LEITE, J.A. VARELA, Applied Physics Letters 84 (26), 54705476 (2004).
87. ”Synthesis of ZrO2-based ceramic pigments” E. LONGO, C.S. XAVIER, C. E. F.
COSTA, S. C. L. CRISPIM, M. I. B. BERNARDI, M. A. M. A. MAURERA, M. M.
CONCEIÇÃO, A. G. SOUZA, Journal of Thermal Analysis and Calorimetry 75,
461-466, (2004).
88. “The effect of Nb doping on ferroelectric properties of PZT thin films prepared from
polymeric precursors” E. LONGO, E C F SOUZA, A Z SIMOES, M. CILENSE,
Materials Chemistry and Physics 88 (1), 155-159 (2004).
89. “The influence of crystallization route on the properties of lanthanum-doped
Bi4Ti3O12 thin films” E. LONGO, A. Z. SIMOES, C. S. RICCARDI, C. QUINELATO,
Materials Science and Engineering B-Solid State Materials for Advanced
Technology 113 (3), 207-214 (2004).
90. “Theoretical analysis of the interaction of Co, Co-2, and Nh(3), with ZnO” E.
LONGO, J. B. L. MARTINS, J. R. SAMBRANO, L. A. S. VASCONCELLOS, Química
Nova 27 (1), 10-16 (2004).
91. “Thermal study of CoxZn7-xSb2O12 Spinel obtained by pechini method using
different alcohols” E. LONGO, D. S. GOUVEIA, R. ROSENHAIM, M. A. M. A.
MAURERA, S. J. G. LIMA, C. A. PASKOCIMAS, E. LONGO, A. G. SOUZA, I. M. G.
SANTOS, Journal of Thermal Analysis and Calorimetry 75, 453-460 (2004).
92. “Very large dielectric costant of highly oriented Pb1-xBaxTiO3 thin films prepared
by chemical deposition” E. LONGO, F. M. PONTES, E. R. LEITE, G. P. MAMBRINI,
M. T. ESCOTE, J. A. VARELA, Applied Physics Letters 84 (2), 248-250 (2004).
93. “Ferroelectric and dielectric properties of lanthanum-modified bismuth titanate
thin films obtained by the polymeric precursor method” A.Z. SIMOES, A.H.M.
GONZALEZ,
C.S.
RICCARDI,
Journal of Electroceramics 13 (1-3), 65-70 (2004).
94. “Effect of thickness on the Electrical and Optical Propertis of Sb Doped SnO2
(ATO) Thin Films” T.R. GIRALDI, M. T. ESCOTE, M.I.B. BERNARDI, V. BOUQUET, E.R.
LEITE, E. LONGO, J.A. VARELA, Journal of Electroceramics 13, 159-165 (2004).
95. “Extrinsic properties of colossal magnetoresistive samples” P. N. Lisboa Filho, A.
W. Mombru, H. Pardo, E. R. Leite, W.A. Ortiz, Solid State Communications 130, 3136 (2004).
18
96. “Structural analysis of pure and LiCF3 SO3-doped amorphous WO3
electrochromic films and discussion on coloration kinetics” P.R. BUENO, F. M.
PONTES, E. R. LEITE, L.O.S. BULHOES, P.S. PIZANI, P.N. LISBOA-FILHO, W.H.
SCHREINER, Journal of Applied Physics 96 (4), 2102-2106 (2004).
97. “Análise teórica da interação de CO, CO2 e NH3 com ZnO” J.B.L. MARTINS, J.R.
SAMBRANO, L.A.S. VASCONCELLOS, E. LONGO, C.A. TAFT, Química Nova 27 (1),
10-16 (2004).
98. “Qualitative measurement of residual in carbon in wet-chemically synthesize
powders” E.R. CAMARGO, E. LONGO, E.R. LEITE, M. KAKIHAMA, Ceramics
International 30, 2235-2239 (2004).
99. “Synthesis of Ni nanoparticles in microporous and mesoporous Al and Mg oxides”
A. VALENTINI, N.L. CARREÑO, L.F.D. PROBST, E.R. LEITE, E. LONGO, Microporous
and Mesoporous Materials 68, 151-157 (2004).
100. "Materiais cerâmicos para células a combustível" D. Z. DE FLORIO, F. C. FONSECA,
E. N. S. MUCCILLO, R. MUCCILLO Cerâmica 50, 316, 275-290 (2004).
101. "Lattice parameters of yttria-doped ceria solid electrolytes" J. F. Q. REY, E. N. S.
MUCCILLO, Journal European Ceramic Society 24 (6) 1287-1290 (2004).
102. "Impedance spectroscopy analysis of percolation in (yttria-stabilized zirconia) yttria ceramic composites" F. C. FONSECA, R. MUCCILLO, Solid State Ionics 166
(1-2), 157-165 (2004).
103. "Synthesis by the polymeric precursor technique of Bi2Co0.1V0.9O5.35 and electrical
properties dependence on the crystallite size" C. H. HERVOCHES, M. C. STEIL, R.
MUCCILLO, Solid State Sciences 6(2), 173-177 (2004).
104. "Transport properties of La0.6Y0.1Ca0.3MnO3 compounds with different interfaces" F.
C. FONSECA, J. A. SOUZA, R. F. JARDIM, R. MUCCILLO, E. N. S. MUCCILLO, D.
GOUVÊA, M. H. JUNG, A. H. LACERDA, Journal European Ceramic Society 24,
1271-1275 (2004).
105. "Synthesis, sintering and impedance spectroscopy of 8 mol% yttria-doped ceria
solid electrolyte", S. K. TADOKORO, T. C. PORFÍRIO, R. MUCCILLO, E. N. S.
MUCCILLO, Journal Power Sources 130, 15–21 (2004).
106. "Effect of boron oxide on the cubic-to-monoclinic phase transition in yttriastabilized zirconia" D. Z. FLORIO, R. MUCCILLO, Material Res. Bulletin 39, 1539-1548
(2004).
107. "Physical characteristics and sintering behavior of MgO-doped ZrO2
nanoparticles", E. N. S. MUCCILLO, S. K. TADOKORO, R. MUCCILLO, Journal
Nanoparticle Research 6, 301–305 (2004).
19
108. "Elastic modulus of porous Ce-TZP ceramics" F. F. C. P LIMA, A. L. E. GODOY, E. N.
S. MUCCILLO, Materials Letters 58 (1-2), 172-175 (2004).
109. "Utilização de rejeitos de pilha zinco-carvão em argamassas e concretos de
cimento Portland" M. A. COIMBRA, W. LIBARDI, M.R. MORELLI, Cerâmica 50
(316), 300-307 (2004).
110. "Evaluation of Industrial Residues in Concrete for Civil Construction" M. A.
COIMBRA; W. LIBARDI, M.R. MORELLI, American Ceramic Society Bulletin 94019406 (2004).
111. "Desenvolvimento de Resíduo Pozolânico da Indústria Cerâmica"
M. A.
COIMBRA, W. LIBARDI,
M.R. MORELLI, Revista do Instituto de Ciência e
Tecnologia em Resíduos e Desenvolvimento Sustentável ( 2004).
112. “β-BaB2O4 nanometric powder obtained from the ternary BaO-B2O3-TiO2 system
using the polymeric precursor method” L.J.Q. MAIA, M.I.B. BERNARDI, A.C.
ZANATTA, A.C. HERNANDES and V.R. MASTELARO, Materials Science and
Engineering B107, 33-38 (2004).
113. “Dielectric and ferroelectric properties of Bi4Ti3O12 ceramics produced by a laser
sintering method” Z.S. MACEDO, M. LENTE, J. EIRAS AND A.C. HERNANDES,
Journal of Physics Condensed Matter 16, 2811-2818 (2004).
114. “Growth and characterization of Nd-doped SBN single crystal fibers” J.J.
ROMERO, M.R.B. ANDREETA, E.R.M. ANDREETA, L.E. BAUSÁ, A.C.HERNANDES, J.G.
SOLÉ, Applied Physics A 78 (7), 1037-1042 (2004).
115. “Impedance spectroscopy of Bi4Ti3O12 ceramic produced by self-propagating
high-temperature synthesis technique” Z.S. MACEDO, C.R. FERRARI,
A.C.
HERNANDES, Journal of the European Ceramic Society 24, 2567-2574 (2004).
116. “Laser heated pedestal growth and optical characterization of CaTa2O6 single
crystal fiber”, C.R. FERRARI, A.S.S. DE CAMARGO, L.A.O. NUNES,
A.C.HERNANDES, Journal of Crystal Growth 266, 475-480 (2004).
117. “Laser-sintered bismuth germanate ceramics as scintillator devices”, Z.S.
MACEDO, R.S. SILVA, M.E.G. VALÉRIO, A. L. MARTINEZ, A. C. HERNANDES, Journal
of the American Ceramic Society 87 (6), 1076-1081 (2004).
118. “Multiwavelength laser action of Nd3+:YalO3 single crystals grown by the laser
heated pedestal growth method”, J.J. ROMERO, E. MONTOYA, L.E. BAUSÁ, F.
AGULLÓ-RUEDA, M.R.B. ANDREETA, A.C. HERNANDES, Optical Materials 24, 643650 (2004).
20
119. “Preparation of composites of topaz embedded in glass matrix for applications in
solid state thermoluminescence dosimetry”
C.M.S. DE MAGALHÃES, Z.S.
MACEDO, M.E.G. VALERIO, A.C. HERNANDES, D.N. SOUZA, Nuclear Instruments
and Methods in Physics Research B 218, 277-282 (2004).
120. “Radiation detectors based on laser sintered Bi4Ge3O12 ceramics” Z.S. MACEDO,
R.S. SILVA, M.E.G. VALÉRIO, A.C. HERNANDES, Nuclear Instruments and Methods
in Physics Research B 218, 153-157 (2004).
121. “Self-propagation high-temperature synthesis of bismuth titanate”, Z.S. MACEDO,
C.R. FERRARI, A.C. HERNANDES, Powder Technology 139, 175-179 (2004).
122. “Spectral Imaging for visualization of distribution of Nd3+ ions in CaTaO6 fibre”, S.K.
MENDIRATTA, J. CASCALHEIRA, C.R. FERRARI,
A.C. HERNANDES, Materials
Science Forum 455-456, 665-668 (2004).
123. “Synthesis and characterization of beta barium borate thin films obtained from
the BaO-B2O3-TiO2 ternary system” L.J.Q. MAIA, M.I.B. BERNARDI, C.A.C. FEITOSA,
V.R. MASTELARO, A.R. ZANATTA, A.C.HERNANDES, Thin Solid Films 457, 246-252
(2004).
124. “Structural and optical characterization of beta barium borate thin films grown by
electron beam evaporation” V.R. MASTELARO, A.C. HERNANDES, L.J.Q. MAIA,
C.A.C. FEITOSA, M. SIU-LI, F.S. VICENTE, Journal of Vacuum Science and
Technology A 22, (5), 1-5 (2004).
125. “Synthesis and Characterization of the β-BaB2O4 phase obtained by the polymeric
precursor method” P.P. NEVES, L.J.Q. MAIA, M.I.B. BERNARDI, A.C. ZANATTA, V.R.
MASTELARO, S.M. ZANETTI AND E.R. LEITE, Journal of Sol-Gel Science and
Technology 29, 89-96 (2004).
126. “Structural and spectroscopic characteristics of neodymium doped CaTaO6
single crystal fibres grown by the laser heated pedestal growth technique”,
A.S.S. DE CAMARGO, C.R. FERRARI, A.C. HERNANDES, L.A.O. NUNES, Journal of
Physics-Condensed Matter 16(32), 5915-5923 (2004).
127. “Synthesis and crystal growth of sillenite phases in the Bi2O3-TiO2-Nb2O5 system”
T.O. DOS SANTOS, J.F. CARVALHO,
A.C. HERNANDES,
Crystal Research
Technology 39 (10), 868-872 (2004).
128. “Current-induced conductance jumps in mechanically controllable junctions of
La0.7Sr0.3MnO3 manganites” J. BASZYNSKI, W. KOWALSKI, C.A. CARDOSO, F.M.
ARAUJO-MOREIRA, M.R.B. ANDREETA, A.C. HERNANDES, Czechoslovak Journal of
Physics 54, D39-D42, Part 1 Suppl. D (2004).
21
129. “XAS and XRD structural characterization of lanthanum-modified PbTiO3 ceramic
materials” P.P. NEVES, A.C. DORIGUETTO, V.R. MASTELARO, L.P. LOPES, Y.P.
MASCARENHAS, Journal of Physical Chemistry B 108(39), 14840-14849 (2004).
130. “Electrochemical nucleation of lead and copper on indium-tin oxide electrodes”
L. BULHOES, L. MASCARO, Journal of Solid State Electrochemistry 8, 238-243
(2004 ).
131. “Breakdown of the niobium oxide film under galvanostatic polarisation and in
acid solutions” M. FREITAS, C. EIRAS , L. BULHOES, Corrosion Science 46, 10511060 (2004).
132. “Electrochemical and electrochromic response of poly(thiophene-3-acetic acid)
films” M. GIGLIOTI, F. TRIVINHO-STRIXINO, J. MATSUSHIMA, L. BULHOES, E. C.
PEREIRA, Solar Energy Materials and Solar Cells 82, 413-420 (2004).
133. “Determination
of
chloramphenicol
in
tablets
by
electrogenerated
chemiluminescence” C. LINDINO, L. BULHOES, Journal of the Brazilian Chemical
Society 15, 178-182 (2004).
134. “Electrocatalytic properties and electrochemical stability of polyaniline and
polyaniline modified with platinum nanoparticles in formaldehyde medium” L.
MASCARO, D. GONCALVES, L. BULHOES, Thin Solid Films 461 , 243-249 (2004).
135. “Rh electrodeposition on Pt in acidic medium: a study using cyclic voltammetry
and an electrochemical quartz crystal microbalance” R. OLIVEIRA, M. SANTOS,
L. BULHOES, E.C. PEREIRA, Journal of Electroanalytical Chemistry 569, 233-240
(2004).
136. “Quantitative structural analysis of the transition from LT-LixCoO2 to HT-LixCoO2
using the rietveld method: correlation between structure and electrochemical
performance” E. SANTIAGO, P. BUENO, A. ANDRADE, C. PAIVA-SANTOS, L.
BULHOES, Journal of Power Sources 125, 103-113 (2004).
137. “Electrogravimetric investigation of formaldehyde oxidation at Pt electrodes in
acidic media” M. SANTOS, L. BULHOES, Electrochimica Acta 49, 1893-1901
(2004).
138. “Electrochemical oxidation of methanol on Pt nanoparticles dispersed on RuO2”
H. VILLULLAS, F. MATTOS-COSTA, L. BULHOES, Journal of Physical Chemistry B
108, 12898-12903 (2004).
139. “Anodic oxidation of formaldehyde on Pt-modified SnO2 thin film electrodes
prepared by a sol-gel method”, H. VILLULLAS, F. MATTOS-COSTA, P. NASCENTE,
L. BULHOES, Electrochimica Acta 49, 3909-3916 (2004).
22
140. “Huge values of room-temperature dielectric constants in pellets of poly(3methylthiophene)” S. MORAES, L. WALMSLEY, E. PEREIRA, A. CORREA, Journal Of
Materials Research 19 , 2068-2071 (2004).
141. “The relationship between the structure and electrocatalytic properties of TiO2
electrodes doped with CeO2” C. RONCONI, P. ZANOTTO, U. BROCKSOM, P.
NASCENTE, E.C. PEREIRA, Journal of Applied Electrochemistry 34 , 1229-1233
(2004).
142. “Development of an automated device for fabrication of self-assembled films” F.
TRIVINHO-STRIXINO, E.C. PEREIRA, L. LOPES, Quimica Nova 27, 661-663 (2004).
143. Self-doping effect in poly(o-methoxyaniline)/poly(3-thiopheneacetic acid) layerby-layer films F. TRIVINHO-STRIXINO, E.C. PEREIRA, S. MELLO, O. OLIVEIRA,
Langmuir 20, 3740-3745 (2004).
144. “Experimental and theoretical study of the demagnetization fields in
orthorhombic superconducting samples” C. NAVAU, C. A. CARDOSO, O. F. DE
LIMA, F. M. ARAUJO-MOREIRA, Journal of Applied Physics 96(1), 486-493 (2004).
145. “Magnetic properties of the RuSr2Ln1.5Ce0.5Cu2O10-d (Ln = Y, Ho and Dy) and
RuSr2YCu2O8-d rutheno-cuprate families: a comparative study” C. A. CARDOSO,
F. M. ARAUJO-MOREIRA, V. P. S. AWANA, H. KISHAN, O. F. DE LIMA,
E.
TAKAYAMA-MUROMACHI, Physica C 405, 212 (2004).
146. “Magnetic field behavior of AC susceptibility in two-dimensional Josephson
Junction Arrays: Evidence for nonuniform critical current density profile” F. M.
ARAÚJO-MOREIRA, W. MALUF, S. SERGEENKOV, Solid State Communications 131,
759-762 (2004).
147. “Current-induced conductance jumps in mechanically controllable junctions of
La0.7Sr0.3MnO3 manganese”; J. BASZYNSKI, W. KOWALSKI, C. A. CARDOSO, F. M.
ARAUJO-MOREIRA, M. R. B. ANDREETA, A. C. HERNANDES, Czechslovak Journal
of Physics 54 D39-D42 Part 1 Suppl. D (2004).
148. “Manifestation of Geometric Effects in Temperature Behavior of AC Magnetic
Response of Josephson Junction Arrays” S. SERGEENKOV, F. M. ARAÚJOMOREIRA; Journal Experimental Theoretical Physics Letters 80 (9), 580 (2004).
149. “Investigation of Spin Glass Behavior in LnRu-122 [Ln:Gd, Dy, Y, Ho]” C. A.
CARDOSO, F. M. ARAUJO-MOREIRA, V. P. S. AWANA, E. TAKAYAMAMUROMACHI, O. F. DE LIMA, H. YAMAUCHI,, M. KARPPINEN, Physica C 408, 183
(2004).
150. “Anomalous magnetic behavior of electrodeposited chromium thin films” L.
FELICIANO, A. DE OLIVEIRA, W. SCHREINER,
E. PEREIRA, Journal of
Electroanalytical Chemistry 574, 333-338 (2005).
23
151. “Foundry sand recycling in the troughs of blast furnaces: a technical note” R.M.
ANDRADE, S. CAVA, S.N. SILVA, E. LONGO, Journal of Materials Processing
Technology 159 (1), 125-134 (2005).
152. “The nature of the photo luminescence in amorphized PZT” M.S. SILVA, M.
CILENSE, E. ORHAN, Journal of Luminescence 111 (3), 205-213 (2005).
153. “Absence of relaxor-like ferroelectric phase transition in (Pb,Sr)TiO3 thin films” F.M.
PONTES, S.H. LEAL, E.R. LEITE, Applied Physics A-Materials Science & Processing 80
(4), 813-817 (2005).
154. ”Structural and ferroelectric properties of Pb1-xSrxTiO3 thin films” F.M. PONTES, S.H.
LEAL, M.R.M.C. SANTOS, Applied Physics A-Materials Science & Processing 80 (4),
875-880 (2005).
155. ”Recent research developments in SnO2-based varistors” M.R. CASSIA-SANTOS,
V.C. SOUSA, M.M. OLIVEIRA, Materials Chemistry and Physics 90 (1), 1-9 (2005).
156. “Semi-empirical studies of alkaline metals-fullerene MxC60, M@C-60 interactions”
J.D. SANTOS, E. LONGO, M.E. BANJA, Journal of Molecular Structure (Theochem)
713 (1-3), 161-169 (2005).
157. “Effect of the excess of bismuth on the morphology and properties of the
BaBi2Ta2O9 ceramics” A.Z. SIMOES, G.C.C .DA COSTA, M.A. RAMIREZ, Materials
Letters 59 (6), 656-661 (2005).
158. “In situ oriented crystal growth in a ceramic nanostructured system”
C. RIBEIRO, E.J.H. LEE, T.R. GIRALDI, Journal of Applied Physics 97 (2), Art. No.
024313 (2005).
159. “Theoretical analysis of the structural deformation in Mn-doped BaTiO3”
J.R. SAMBRANO, E. ORHAN, M.F.C. GURGEL Chemical Physics Letters 402 (46), 491-496 (2005).
160. “Effect of La2O3 addition and O2 atmosphere on the electric properties of nO2
TiO2” L.G.P. SIMÕES, M.R. CASSIA-SANTOS, M.M. OLIVEIRA, E. LONGO, J.A.
VARELA, Materials Chemistry and Physics 90, 234-238 (2005).
161. “Synthesis of CaxSr1-xWO4 by the polymeric precursor method” S.L. PORTO, M.R.
CASSIA-SANTOS, I.M.G. SANTOS, Journal of Thermal Analysis and Calorimetry
79 (2), 401-406 (2005).
162. “Thermal and structural characterization of Sr1xCoxTiO3 obtained by polymeric
precursor method” M.A.F. SOUZA, R.A. CANDEIA, S.J.G. LIMA, Journal of Thermal
Analysis and Calorimetry 79 (2), 407-410 (2005).
24
163. “Synthesis and characterization of SrCoxTi1-xO3” MAF DE SOUZA, AG SOUZA, RA
CANDEIA, Journal of Thermal Analysis and Calorimetry 79 (2), 411-414 (2005).
164. ”Stability studies on undoped and doped Mg2TiO4, obtained by the polymeric
precursor method” M.R.S. SILVA, S.C. SOUZA, I.M.G. SANTOS, Journal of Thermal
Analysis and Calorimetry 79 (2), 421-424 (2005).
165. “The effects of Co, Ni and Mn on the thermal processing of Zn2TiO4
pigments” S.C. SOUZA, M.A.F. SOUZA, S.J.G LIMA Journal of Thermal Analysis and
Calorimetry 79 (2), 455-459 (2005).
166. ”Thermochemical parameters and calculations ab-initio of the
bisdimethyldithiocarbamate zinc(II) complex” J.R. BOTELHO, A.G. SOUZA, A.D.
GONDIM, Journal of Thermal Analysis and Calorimetry 79 (2), 309-312
(2005).
167. “Influence of pH on iron doped Zn2TiO4 pigments” S.C. SOUZA, I.M.G. SANTOS,
M.R.S. SILVA, ournal of Thermal Analysis and Calorimetry 79 (2), 451-454 (2005).
168. “Structural and electronic properties of PbTiO3: Density functional theory applied
to periodicmodels” RC DE LAZARO E LONGO, A BELTRAN, Quimica Nova 28 (1),
10-18
(2005).
169. “Thin-doped indium oxide nanobelts grown by carbothermal reduction method”
M.O. ORLANDI, R. AGUIAR, A.J.C. LANFREDI, E. LONGO, J.A. VARELA, E.R. LEITE,
Applied Phyisics A 80, 23025 (2005).
170. "Preparation and electrochemical characterization of perovskite/YSZ ceramic
films" D. Z. DE FLORIO, R. MUCCILLO, V. ESPOSITO, E. DI BARTOLOMEO, E.
TRAVERSA, Journal Electrochemical Society 152 (1), A88-A92 (2005).
171. “The CeO2-TiO2-ZrO2 sol-gel film: a counter-electrode for electrochromic devices”
C. AVELLANEDA, L.O.S. BULHOES, A. PAWLICKA, Thin Solid Films 471 100-104
(2005).
172. “Electrodeposition of lead on ITO electrode: influence of copper as an additive”
C. AVELLANEDA, M. NAPOLITANO, E. KAIBARA , L.O.S. BULHOES, Electrochimica
Acta 50, 1317-1321 (2005 ).
173. “The use of a metallic bilayer for the oxidation of small organic molecules” R.
OLIVEIRA, M. SANTOS, B. MARCUSSI, P. NASCENTE, L.O.S. BULHOES,,
E.C.
PEREIRA, Journal of Electroanalytical Chemistry 575 , 177-182 (2005).
174. “An EQCM investigation of charging RuO2 thin films prepared by the polymeric
precursor method” M. SANTOS, A. TEREZO, V. FERNANDES, E.C. PEREIRA, L.O.S.
BULHOES, Journal of Solid State Electrochemistry, 9 91-95 (2005).
25
175. “Thermal analysis of Caucasian human hair” V.F. Monteiro, A.P. Maciel, E. Longo,
Journal of Thermal Analysis and Calorimetry 79(2), 289-293 (2005).
176. “Magnetic and superconducting properties of RuSr2Gd1.5Ce0.5 Cu2O10-δ samples:
Dependence on the oxygen content and aging effects” C.A.CARDOSO,
A.J.C.LANFREDI, A.J.CHIQUITO, F.MARAUJO-MOREIRA, V.P.SAWANA, H.KISHAN,
R.L.DE ALMEIDA, O.F.DE LIMA, Physical Review B 71, 1 (2005).
177. “Optical properties of potassium niobate thin films prepared by the polymeric
precursor method” A. Z. SIMOES, A. RIES, C. S. RICCARDI, M. A. ZAGHETE, J. A.
VARELA, Materials Letters 59 (5), 598-602 (2005).
Chapter in Books:
1. "Magnetic properties of artificially prepared highly ordered two-dimensional
shunted and unshunted Nb–AlOx–Nb, Josephson junctions arrays”; F. M. AraújoMoreira and S. Sergeenkov; invited chapter to the book: Progress in Josephson
Junction Research, Editor Frank Columbus, Nova Science Publishers (2004).
2. “Spin Glass Behavior in Rutheno-Cuprates”; C. A. Cardoso, and F. M. AraujoMoreira; invited chapter to the book: Horizons in Superconductivity Research, Ed.
Frank Columbus, Nova Science Publishers, New York (2004).
26
1.4 Results of the Innovation Division
INNOVATION
RESEARCH
SITUATION
SUBPROJECT
1) Development of industrial process for production of
nanoparticles of niobium oxide for application in
electronic ceramics, using a clean chemical route.
2) Development of industrial process for production of
nanoparticles of niobium oxide for application in
electronic ceramics, using spray pyrolysis.
3) Development of high voltage ZnO varistor.
The objective is to characterize the raw materials,
optimization of the processing conditions and
formulation of the varistor composition.
4) Development of Temperature Sensors.
Actual Situation: A prototype of a temperature sensor
has concluded based on NTC perovskites. The main
processing parameters for the reproducible fabrication
of a batch Quantity of sensors was studied.
CBMM
Concluded
CBMM
Concluded
DELMAR Ltda
Concluded
INDUSTRY 2
Concluded
5) Study on the Behavior of the Al2O3-Cr2O3 and Al2O3- RCR
ZrO2 Refractory Systems, Working in Close Contact with
Molten Glasses, for the Production of Bio-Compatible
Ceramic Fibers.
Concluded
6) Influence of the Product Composition and CSN
Operational Parameters on the Taphole Mix
Operational Performance. The objective was to study
the behavior of different taphole mixes under critical
operational conditions, in order to optimize the
performance of commercial products.
7) Enhanced behavior of the torpedo car refractory by CSN
the nanoparticle impregnation technique.
It was developed a cerium solution able to partially
occupy the free pores in the microstructure of the
Al2O3/SiC/C/MgAl2O4 refractory lining used in the
torpedo cars.
8) Electrofused refractory aggregates for cement kiln
Elfusa
Concluded
Concluded
9) Recycling of Ceramic Industry Waste
Concluded
FAPESP
Concluded
10) Development of a Vitreous Silica Based refractory Deflotec Ind. Concluded
Composition For the Crucibles Used on The Foundry of Com.
de
Dental metallic Alloys and Precious metals (assaying)
Produtos
Refratários
LTDA
27
Concluded
11) Development of a Glass Reject Based Deffloculant Ceramic
for Masses in the Ceramic Triaxial
Industry Union
of
Porto
Ferreira – SP
Under
12)
Fireclay Refractories
Produced with
Low Refratário
development
Temperature (<500°C) Refractory Aggregates (grog)
Scandelari
S/A
13) Development of automotive temperature sensors
Metalurgica
Iguaçu Ltda
Under
development
14) Development of Translucent Alumina Pieces for the Tecnident
Industrial of dentistry Products
Under
development
15) Ceramic processing of graphite
Faber Castell
Under
development
16) Chemical/Ceramic Synthesis/Inovation
FAPESP
Under
development
17) Fiber reinforcement
FAPESP
Under
development
18) Aluminum silicate (fireclay class) refractory
CSN
Under
development
19) Development of a fuel leak sensor for commercial The Ipiranga
and industrial reservoirs
Petroleum
Company
20) Development of a low-cost multi-use laser gun for UFSCar
law-enforcement forces
Under
development
Under
development
21) Development of an industrial process to obtain National de Under
development
large quantities of ferromagnetic graphite
Grafite Inc.
22) Refractory products for anode baking furnaces.
28
Togni
S.A. Under
development
Materiais
Refratários
PATENTS DEPOSITED
During this year four patents were deposited and are
described bellow:
- Method for producing corrosion resistant refractories Praxair,
Silica-based refractories are impregnated with Technology,
protective material that is more resistant towards attack Inc.
by corrosive species. The protective material coats the
surface of the refractory matrix and fills some of the
cavity volume of its pores, crevices, surfaces
imperfections and irregularities. The protective material
is positioned by impregnating the refractory with a
precursor which, under the input of energy, is converted
into the corrosion resistant protective material.
- Method to transform amorphous carbon in crystalline FABER
graphite in graphite mines using transition metal CASTELL
nanoparticles.
Abstract: The performance of a graphite mine can be
described by the obtained graphite
mechanical
resistance (bending resistance, tip breaking, etc) and
by its graduation (mainly the blackness level). However,
based on the usual production methods used in
graphite mines, these two characteristics are difficult to
be maximized simultaneously, that is, higher the
mechanical resistance smaller is the blackness level.
The degree of black in a graphite mine is related with
the amount of graphite and the amount of amorphous
carbon. As higher is the amorphous carbon, smaller will
be the degree of blackness and higher is the
mechanical resistance. The present invention has as
main objective decrease the amount of amorphous
carbon in a composition of the graphite based mine,
by means of the transformation of this disordered
material (amorphous carbon) into crystalline graphite.
For this, it is proposed the use of nanoparticles
(particles with 3 to 70 nm size) of transition metals such
as Fe, Ni and Co. These particles will be generated
during the sintering through the decomposition of a
chemical compound, that is, the precursor raw material
containing the proposed transition metals. With the
transformation or conversion of amorphous carbon, is
possible to intensify the blackness level of the graphite
carbon mine, reducing the dispersion of both, the
mechanical resistance and the blackness level.
Ferromagnetic graphite
Development of an industrial process to obtain large
quantities of ferromagnetic graphite
29
Patent
deposited at
INPI
under
protocol
Nr. 003025
US6,667,074
B2
Submitted
Submitted
Preparation of thin film of Pt over inexpensive substrate
FAPESP
Submitted
Development of a Glass Reject Based Deffloculant for FAPESP
Masses in the Ceramic Triaxial
Submitted
A New Method for The Dosing of Structural Concrete
Being
Prepared
Development of Ceramic Fiber
blast furnace
FAPESP
Furnace of slag of CSN
PRIZES
Finep Prize of Technological Innovation, category
FINEP
Research Institution, granted to MCDCM.
Honorable Mention
from the Brazilian Association of
Expertness and Evaluations in the category Technical
Expertness for Steelmaking Refractories.
Senior Research Prize given by the Prefeitura de São
Carlos
granted
by
E.
Longo
for
the
technical
contribution in Ceramics.
São Carlos
Prize Intendente Câmara, a ABM, Brazilian Metals
Association granted to the technical contribution
"Desenvolvimento de refratários para carro torpedo" ABM
XXXII Seminário de Redução de Minério de Ferro e
Matérias Primas (58Th Annual Congresso of ABM).
30
Submitted
1.5 – Continuous Education and Dissemination Results
ACTIVITY
RESEARCH
SUBPROJECT
“NANOPARTiCLES: OLD IDEAS WITH NEW USES”
Prof. Dr. Edson Roberto Leite – Prof. Dr. Elson Longo
Place: Winter School of Physics Department (DF/UFSCar)
Undergraduate and
Graduate Level
“TRANSMISSION ELECTRON MICROSCOPY: APPLICATIONS IN
NANOTECHNOLOGY” Prof. Dr. Daniel Mário Ugarte and
Daniela Zanchet (Laboratório de Microscopia – Laboratório
Nacional de Luz Sincrotron)
Place: VII Winter School of Physico-Chemistry and Analytical
Chemistry (DQ/UFSCar)
Mini-course
“SINTERING STUDY BY THERMAL ANALYSIS”
Prof. Dr. Jürgen Blumm
(Netzsch Geratebau GmbH)
Place: Materials Science Department
Seminars
“Simulation of Ceramics Materials”
Prof. Dr. Juan Andres
(Universitat Jaume I)
Castellon-Espanha
Place: Chemical Department (DQ/UFSCar)
“Simulation of Semiconductors Oxides-SnO2 and TiO2”
Prof. Dr. Armando Beltran
(Universitat Jaume I)
Castellon-Espanha
Place: Chemical Department (DQ/UFSCar)
“Nitrate Ceramics”
Prof. Dr. Roger Marchand
Universitè de Rennes - France
Place: Chemical Department (DQ/UFSCar)
31
“Densification and Grain Growth of Advanced Tin Oxide
Ceramics “
Prof. Dr. Richard Bradt
University of Alabama USA
Place: Chemical Department (DQ/UFSCar)
“Photoluminescence of titanates”
Profa. Dra. Emmanuelle Orhan
Universitè de Rennès – France
Place: Chemical Department (DQ/UFSCar)
“New Materials for a New Millenium”
Prof. Dr. Elson Longo
MCDCM/LIEC-UFSCar
Place: Institut of Chemistry (IQ/UNESP-Araraquara)
State of São Paulo – Materials Science Engineering Students
Congress
“CORROSION IN REFRACTORIES MATERIALS”
Ph.D. Sidiney Nascimento Silva, Ph.D. Fernando Vernilli Jr
MCDCM/LIEC-UFSCar
Courses of 8 hours of classes
State of João Pessoa – Paraíba - Universidade Federal da
Paraíba
“New Materials for a New Millenium”
Prof. Dr. Elson Longo,
Dr. Carlos Alberto Paskocimas,
(MCDCM/LIEC-UFSCar)
Courses of 8 hours of classes
32
ACTIVITY
RESEARCH
SUBPROJECT
Diffusion
The excellence of the activities of MCMDC has been Public
recognized by the Brazilian radio, TV and written press.
Several reports on such activities were publicized also with
the objective of contributing to the diffusion, throughout the
whole Brazilian society, of the science and technology
developed by MCMDC. As examples of such public
recognition and important diffusion support one can cite
the newspapers:
O Imparcial, Araraquara, SP.
A Folha, São Carlos, SP.
A Tribuna, Sáo Carlos, SP.
Primeira Página, São Carlos, SP.
O Estado de São Paulo, São Paulo, SP.
As for magazines:
Notícias, a magazine from FIESP and CIESP.
Pesquisa, from FAPESP, one of the most active
R&D supporting organizations in Brazil
-
As for the TV, MCMDC can rely upon TV Company
covering the whole Central Region of São Paulo state,
produced as series of reports covering the activities of
MCDCM and TV-Cabo Branco of the Paraíba and TV
Ponta Negra of the Rio Grande do Norte who has been
helping in the public diffusion of a series of MCMDC
achievements, either related with its basic research, or
related to the industrial use of technologies developed by
MCMDC.
33
to
the
2 – Results in Basic Research
2.1 – Chemical Synthesis
Nanostructured ceramics materials have become a topic of increasing interest in the
research center. This is mainly due to the ability of nanomaterials to display novel or
better properties when compared to bulk materials
which may lead to the
development of electronic and opto-electronic nanodevices with superior performance.
It is well known that size and morphology are very important parameters in
nanostructures. Therefore, it is of fundamental importance to be able to control these
aspects and to reproduce them, in order to control the final properties of the
material.The hydrolysis of metal halides and other inorganic salts is a method widely
employed to process metal oxide nanoparticles, such as TiO2, doped and undoped
SnO2, ZnO, and ZrO2. The cation is normally hydrolyzed by pH changing, which promotes
the precipitation of an insoluble amorphous hydrous metal oxide. The main problem of
this approach is the crystallization step, since heat treatment or hydrothermal treatment
is required to promote crystallization. During the crystallization step, each hydrous metal
oxide particle can generate several nuclei, rendering it very difficult to control particle
morphology and shape .The synthesis of metal oxides based on the hydrolysis of
inorganic salts or metal alkoxides, with a high degree of crystallinity at room
temperature, is still a challenge.
In a recent work, published in the J. of nanoscience and Nanotechnology, we describes
the synthesis, at room temperature, of doped and undoped SnO2 nanocrystals (particle
size ranging from 1-3nm) with no thermal or hydrothermal treatment. To the best of our
knowledge, this is the first time that the synthesis of doped and/or undoped SnO2
nanocrystals at room temperature has been reported. This new synthesis method is
based on the controlled oxidation, hydrolysis, and polycondensation of tin ions, in an
ethanol solution. Another novel aspect of this method is the possibility of using
surfactants, which may provide improved control over the particle size. This synthesis
method allowed us to conduct several basic studies concerning nanocrystal growth as
well as optical properties of SnO2 nanostructured. For instance, we studied the effect of
the initial tin (II) ion concentration, in an ethanolic solution, on the mean particle size of
the nanoparticles. The Sn2+ concentration was varied from 0.0025 M to 0.1 M, while all
other synthesis parameters were kept fixed. Moreover, an investigation of the effect of
agglomeration on the nanoparticle characteristics (i.e. size and morphology) was also
done, by modifying the pH of SnO2 suspensions. Several samples were characterized by
transmission electron microscopy, optical absorption spectroscopy in the ultraviolet
range and photoluminescence measurements. The results show that higher initial ion
concentrations and agglomeration lead to bigger nanoparticles. The concentration
effect is explained by an enhanced growth due to a higher supersaturation of the liquid
medium. On the other hand, it was observed that agglomeration of the nanoparticles in
suspension induce coarsening by the oriented attachment mechanism. This study was
published in the J. Phis. Chem. B.
We studied also the quantum confinement effect in colloidal SnO2 nanocrystals. We
observed by photoluminescence (PL) study that the SnO2 nanocrystal presents intense
PL around 320 nm. This PL was attributed to band-to-band transition and the gap energy
34
showed a dependence with the crystal size. This crystal size dependence suggest that
the PL behavior stem from a free exciton decay process. This dependence was well
described by the weak confinement regime predict by the effective mass model. This
work was published in the Appl. Phys. Letters.
In this period we maintained the development of ferroelectric oxides. We started
the crystallization study of amorphous precursor processed by oxidant peroxo method
(OPM) under hydrothermal condition. The OPM process is an interesting route that allow
to obtain an inorganic amorphous precursor free of carbon and Cl and it crystallization
occurs around 600oC. The crystallization of this precursor under hydrothemal condition is
a project that was born in our laboratory. The preliminary results showed that it is possible
to obtain crystalline lead titanate (PT) in a temperature as low as 120oC. Other important
result was the control over the particle morphology of the PT. It was obtained particle
with cubic and fibers morphology, changing the lead concentration and temperature
during the hydrothermal treatment. Conventional (zirconia- and barium cerate-based)
and non-conventional (bismuth-copper-oxide and lanthanum-molybdenum-oxide)
oxide ion solid electrolytes were synthesized also by different chemical techniques for the
production of nanosized sinteractive ceramic powders. Intergranular and intragranular
conductivities were determined and related to the microstructure.
2.2 – Semiconductors and Ferroelectric Materials
The main results obtained during the present period in the area of ferroelectric thin
films and ceramics are discussed below. The main goal in this period was to develop
ferroelectric thin films by controlling the chemical and microstructural features aiming for
applications in FeRAM and DRAM memories. Also the fatigue resistance and retention
characteristics of the films deposited on metal and oxide conductor electrodes as well
as the preparation of amorphous films were investigated for DRAM memory. Significant
advances in the processing and microstructural features of ferroelectric ceramics
indicate that the chemical phase control with more than two cations is extremely
important, especially to obtain very good electrical properties. The use of microwave
oven allows the preparation of bottom electrodes and ferroelectric thin films with great
stoichiometric control and with superior properties than films annealed in the
conventional furnace. The advantages of microwave oven for thin films and ceramics
are: decrease in the temperature and time of the thermal treatment, reduced
processing costs, better production quality. To obtain reasonable ferroelectric and
dielectric properties it is necessary to grow textured films. For this purpose, the microwave
annealing is an excellent choice because the crystallization starts from the interface of
film-substrate leading to an ordered film. Several ferroelectric systems were investigated
in the thin films and ceramics forms such as: Pure lead zirconate titanate (PZT) and
modified with niobium (PZTN), pure lead magnesium niobate (PMN) and modified with
lead titanate (PMN-PT), lithium niobate and tantalate (LNO e LT), strontium titanate (STO),
barium strontium titanate (BST), pure lead titanate and modified with calcium and
strontium (PCT and PST), strontium and barium niobate and tantalate (SBT, SBN, BBT and
BBN), barium and zirconium titanate (BZT), lanthanum bismuth titanate (BIT and BLT).
The main activities developed in this period in this field were:
35
1. Ferroelectric phases were obtained by mechano-chemical synthesis. The
powders were compacted and sintered and their crystal structure and microstructure
characterized;
2. The polymeric solutions were prepared and their viscosities and ionic
concentrations adjusted. The films were deposited in silicon and platinum coated silicon
substrates and thermally treated in a conventional furnace to obtain the desired
crystalline phase;
3. Crystalline phases obtained in the thin films and ceramic were characterized by
Rietveld method. The micro-deformation and crystallite size were also obtained;
4. Atomic force microscopy, scanning electron microscopy and transmission
electron microscopy were used to characterize thin films and ceramics.
5. The electrical characterization of thin films and ceramics were performed by
depositing conducting electrodes by using platinum and gold "sputtering" ;
6. Thermal treatments in the microwave furnace were performed with the
objective to avoid interfacial reactions and favor the texture growth of the films.
Regarding the research in semiconductors oxides, the focus was in the grain
boundary properties in tin oxide ceramics, as well as, in the synthesis of SnO2 and ITO
(Indium tin oxide) nanobelts by carbothermal reduction process. For instance, we
reported for the first time in the literature the synthesis of ITO nanobelts (communication
published in the Appl. Phys. A).
2.3 – Optical and Electrochromic Materials
The main focus of the research in optical properties was the study of PL in amorphous
materials (basically amorphous oxides). Based on theoretical calculations, we try to
understand the source of photoluminescence in the amorphous phase of thin films and
ceramics powders of the following materials BaWO4, PbWO4, CaWO4, Li2TiSiO5 and SnO2.
Besides the theoretical study, thin films and powders were experimentally evaluated by
photoluminescent properties. By using theoretical and experimental models based on
quantum mechanics it was possible to understand the source of photoluminescence in
the amorphous phase.
2.4 – Crystal Growth and Non-crystalline materials
The main results were related to the use of laser to develop dense
ceramics and single crystal fibers. We have used the laser sintering
technique with success to produce dense ferroelectric ceramic and
translucent thermoluminescence ceramics. We also grown single crystal
fibers with high optical quality for solid state laser development,
specially when doped with Nd3+ ions. Other interesting results were the
preparation and characterization of -BaB2O4 (BBO) thin films and
nanopowders. Borate glasses also were produced and its optical properties
characterized. The second harmonic generation intensity of a BBO layer was
controlled by the adjustment of the fraction of crystallized layer."
36
2.5 – Magnetic materials
The research focus still in magnetic properties of nanostructured materials.
Now we are applying the synthesis route used to process nanocomposite in the powder
shape, to process nanocomposite thin film. The liquid precursor used to process the
material is deposited by spin coating and sintered in H2 atmosphere. The results indicate
that it is possible to process SiO2-Ni nanocomposite thin film, with thickness of 200-800 nm,
with interesting superparamagnetic behavior.
We have reported also a novel and inexpensive chemical route leading to
undoubtedly obtain macroscopic quantities of room temperature magnetic carbon. The
material obtained by this procedure has an stable and strong ferromagnetic response
even at room temperature where it can be attracted by a commercial magnet. We
have obtained this magnetic carbon by a vapor reaction consisting of a controlled
etching on the graphite structure. This outstanding behavior has been previously
postulated to be associated to micro-structural characteristics breaking the continuity of
the de-localized π-electron clouds of the graphitic material, thus allowing the existence
of magnetic centers related to the topology. The production of bulk carbon magnetic
material in a macroscopic amount opens new and novel applications of this material in
engineering, as well as in medicine and biology as a unique biocompatible magnetic
material (article in press in Physical Review B-Rapid Communications, March/2005)
37
3. Technological Results
In terms of technological innovations, the center developed several projects
of strong industrial interest, which resulted in several patents and papers . The
interaction with industries was conducted through specific projects with the
different segments.
The projects developed of metallurgical sector, consisted in advanced
refractories have to be applied in order to secure high metal quality from
economical and ecological aspects. During services refractories must note only
tolerate high temperature but also withstand stress (thermal and / or mechanical)
as well resist combined attack by liquids such as molden metals, slags and fluxes.
Researchers of the MCDCM also support the improvement of the quality of
ceramic products by means of determining the characteristics of the products
being processed by several companies and improving the processing of those
products. New products have been developed for several companies by means
of technically and economically feasible chemical processes. This effort is
exemplified with the projects of technical and scientific cooperation with
Companhia Brasileira de Metalurgia e Mineração (CBMM). The nanosized niobium
oxide being processed using polymeric precursor method and spray pyrolysis has
been used for production of niobium oxide powders.
The most important projects related to the technological section are:
1) Development of industrial process for production of nanoparticles of niobium
oxide for application in electronic ceramics, using a clean chemical route. This
project was concluded with CBMM and consists in obtaining of nanosized
niobium oxide powders using an appropriated chemical solution and
precipitation at low temperatures.
2) Development of industrial process for production of niobium oxide
nanoparticles for application in electronic ceramics using spray pyrolysis. This
project was concluded with CBMM and consists in use a chemical solution of
niobium to obtain a spray by means of high energy piezoelectric ceramic as
well as to precipitate the nanoparticles from the spray by using heating.
3) Development of high voltage ZnO based varistor. This project was concluded
with DELMAR and the goal is to characterize the raw materials, optimization of
the processing conditions and formulation of the varistor composition.
4) Development of temperature sensors. This project concluded and was
contracted by a not disclosed company. A prototype of a temperature sensor
was concluded based on NTC perovskites. The main processing parameters for
the reproducible fabrication of the batch quantity of sensors was studied.
5) Study of the behavior of the Al2O3–Cr2O3 and Al2O3-ZrO2 refractory systems,
working in close contact with molten glasses for the production of
biocompatible ceramic fibers. This study was contracted by RCR Corporation
was concluded. The main objective was verify the influence of the impurities
come from the refractory lining during the production of biocompatible glasses
(or fibers).
6) Influence of the product composition and operational parameters on the
Taphole mix operational performance. This project was contracted by CSN was
concluded. The objective was to study the behavior of different taphole mixes
under critical operational conditions, in order to optimize the performance of
commercial products. This study involved laboratory simulations and post
mortem studies of different taphole mixes used.
38
7) Enhanced behavior of the torpedo car refractory by the nanoparticulate
cerium impregnation technique. This project was contracted by CSN was
concluded. A cerium solution was developed to occupy the free pores in the
microstructure of the torpedo car refractory lining aiming the enhancement of
the corrosion resistance. It was observed that the nanoscale protection
mechanism introduced by the use of nanoparticulate cerium impregnation
technique. After the dynamic slag and fracture energy tests, it was verified that
this new corrosion prevention technique decreased to 8% the damages in the
torpedo car refractory lining.
8) The group is working along with ELFUSA Gerla de Eletrofusão in the
development of new electrofused refractory aggregates for cement kilns
refractory linings. A special CaTiO5 electrofused aggregate was concluded
and early tests indicated a very promising material.
9) Recycling of Ceramic Industry Waste. The group has proved that it is possible to
recycle virgin (despite un-appropriate to sell) scrap from the brick, floor and
roof tile and sanitary ware industry, as a substitute for the normal coarse
aggregate and sand in non structural concrete and mortars for laying and
masonry purposes.
10) Development of a Vitreous Silica Based refractory Composition For the
Crucibles Used on The Foundry of Dental metallic Alloys and Precious metals
(assaying). Sponsoring Company – Deflotec Ind. Com. de Produtos Refratários
LTDA Localization – São Carlos – SP. Crucibles made by slip casting the above
developed mix, performed very well comparatively to imported materials
based on the same mineralogical phases. Comparatively to the commonly
used mulcorite based crucibles, the ones developed at LAMARCO performed
10 times better (number of runs).
11) Development of a Glass Reject Based Deffloculant for Masses in the Ceramic
Triaxial. This development was one of the last ramifications of the SEBRAE
PROJECT implemented with the Ceramic Industry Union of Porto Ferreira – SP.
The project also is part of our Research Division on Recycling. This new
deffloculant was technologically evaluated comparatively to the sodium
silicate. It is cheaper and as effective as this last one.
12) Fireclay Refractories Produced with Low Temperature (<500°C) Refractory
Aggregates (grog), Sponsoring Company – Refratário Scandelari S/A
Localization – Lapa – PR. Anew processing route was developed for the
production of fireclay aggregates (grog) to be used in the fabrication of
fireclay refractories (class of 30 –35% Al2O3). There is a great demand for this
kind of aluminum silicate refractories, specially in the sugar cane and agro
business. The generic use of hard fired fireclay grogs (>1300°C) leads to a low
profit margin in the final product. The developed technology is very attractive
commercially considering it brought the grog cost to one third of the current
one, providing a larger profit margin.
13) Development of automotive temperature sensors. Metalurgica Iguaçu Ltda
Different kinds of perovskite-based NTC temperature sensors have been
sinthesized by mixing, pressing and sintering Ni, Cu, Mn, and Co oxides. Some
compositions have also been synthesized by a modified polymeric precursor
technique. The electrical characterization was carried out by dc methods. An
experimental sequence for producing large quantities of each composition
was evaluated for the scaling up of the thermistor production. The challenge
39
posed by local industries looking for Brazilian-made temperature sensors for
application in the automotive industry has been overcome: four out of six
thermistors with behavior similar to commercial thermistors have been
successfully developed.
14) Development of translucent alumina pieces for dentistry applications. This
project was contracted by Tecnident Ltda, of the dendistry sector aiming to
produce translucent alumina bracts.
15) Ceramic processing of graphite. This project was contracted by Faber Castell
and is under development. The project consists in adjustment of processing of
the graphite aiming to obtain graphite with higher mechanical resistance by
using the injection molding and nanoestructured dopants. This project resulted
the patent 4 described in this report.
16) Chemical/Ceramic Synthesis/Inovation. The group devoted efforts to the
development of a new class of ceramic powders defloculant based on prepolymeric chemicals and managed to do so. A patent manuscript has been
submitted for FAPESP appreciation and sponsorship.
17) The group devised a new testing method for pure shear evaluation of concrete
specimens, devoted to evaluate the effect of fiber reinforcement on shear of
Portland concrete, specially for keyed structures in bridges.
18) The group has developed a new aluminum silicate (fireclay class) refractory
composition for the Company Refratário Scandelari, using cheaper raw
materials mined near the company head quarters, in substitution of a special
flint clay which was mined 500km away from the company.
19) Development of a fuel leak sensor for commercial and industrial reservoirs;
project financed by The Ipiranga Petroleum Company.
20) Development of a low-cost multi-use laser gun for law-enforcement forces;
project financed by UFSCar.
21) Development of an industrial process to obtain large quantities of
ferromagnetic graphite ; project financed by National de Grafite Inc.
22)
Refractory products for anode baking furnaces. Refractories used in anode
baking furnaces must be renewed regularly. There are several stresses acting
on the refractory lining. The extent of these stresses will vary somewhat
between an open and a closed pit furnace, but generally the origin and the
implications of the stresses are the same. This project contracted by Togni
S.A. Materiais Refratários has been concluded. A post mortem study
objective of determining the mechanism of the corrosion developed during
the industrial application. It was concluded that containing a high amount
of calcium and sodium aluminum-silicate interacts with the microstructure of
the refractory promoting the corrosion.
40
CONTINUOUS EDUCATION AND DISSEMINATION DIVISION
Our activities in this year can be resumed in:
1.
A trip to the ceramic world - This activity started last year and has given
scientific information to students living up to 400 km far from MCDMC. Four
towns were visited: Monte Aprazível, Promissão, Buritama and Birigui, all
located in the northeast region of the São Paulo state. A total of 200 students
took part on the activities. It was the first time that researchers from the
university visited schools in Buritama and Birigui. The idea was to explain the
difference between glass, crystal and traditional and advanced ceramics.
Several experiments were shown in order to introduce basic concepts
associated with chemical reaction, fluids, magnetic and electrical
phenomena and optics. It was possible also to speak on the importance to
finish their studies and to make them think about interesting and exciting
scientific themes.
2.
Teaching Physics Through Experiments - As part of the continuation of
this project, high school students from São Carlos and Cajuru (nearby town)
participated on physics demonstration and lectures at the Institute of Physics
of São Carlos. A total of 92 students took part on that activity. The students
from high schools spent one morning talking and discussing science. All those
activities have two major objectives: the first one is to teach the basic
concepts of science with a different point of view and pointing out where
those concepts are applied in the day by day situations. The second one is to
show to those students (potential future undergraduate students) and
teachers the ambient of the university life and to try to create the questioning
and thinking behavior on several issues, and not just in believing what the
teachers tell them.
3. Students at the MCDCM labs - As an extension of the earlier projects, we
introduce a new approach on the teaching the concepts of chemical and
physical process involved in the ceramic properties and production process.
This project consists in transform the high school senior students from nearby
cities in graduation students for one day. The students have the opportunity to
live as real graduate students, with a visit to the Universidade de São Paulo
and university ambient and MCDCM laboratory activities. The visit starts with
a lecture about the Universidade de São Paulo Campus, and after this lecture
the high school students are invited to visit the several units of the campus,
including its infrastructure (restaurants, sports center, etc..). The following
activity is the lunch time, where everyone eats at the university restaurant.
During this lunch time the high school students have the opportunity to talk
with the actual graduate students about the course they are interested and
its characteristics. In the afternoon the students are separated into groups of
3-5 people and they visit the researches laboratory of MCDCM. In this part of
the day they are treated as real researches and some simple laboratory
problems and tasks are presented to the group and they are asked to solve
them. They must work as a team and they actually feel the need of the
rationalizing about the problem, and how important is the basic knowledge in
physic and chemistry.
41
4. Ceramic Materials Educational Project - As presented in our last report,
the approach used in this specific project is the interaction with the students
through classes given by the members of the MCDCM in public schools
(specially the ones with low income students). Last year the school that was
chosen for participating on that project was "Gabriel Félix do Amaral" from
São Carlos. One hundred and fifty students from 5th to 6th grades
participated of the activities that occurred in their classroom. Each step of the
activities occurred in the free time period of the students during one whole
week and once a month. The theme chosen to develop in the Gabriel Félix
do Amaral school was clay. The methodology used included 5 steps: basic
concepts; experimental activity with clay; importance and use; environmental
classes and classifying other ceramic material. The procedure was to offer
comic books to the students; the comic books were developed by the
MCDCM members, with a story, for example, about the clay composition,
usage in ancient times, evolution of writing and so on. In the following activity,
the teacher discussed the theme and let the students free to write, with their
own knowledge, small texts, for example, about clay and its importance.
These texts were analyzed with the objective to verify the understanding of
the theme and to detect deficiency in basic science. All information was
collected and a meeting was performed with the coordination of the school
for discussion of some points. This action helped the school to define strategy
to remove deficiency of the students. It is very important to keep in mind that
our project does not have the objective to transfer responsibility. Our focus is
to motivate the students for basic and material science. Up to now, about 300
students have been assisted by this project.
5. School on Crystal Growth and Advanced Materials
The objective of the School on Crystal Growth and Advanced Materials
(SCGChA) is to foster activities connected with the growth and
characterization of crystals, with particular emphasis on training, scientific
research and technological applications. The idea is that researchers in this
field from all over the Brazil will be able to meet and learn from each other.
The SCGChA also promoted the training and development of young students
and researchers. Themes in principles and methods of crystal growth were
presented together with different characterization techniques. The SCGChA
was a forum for discussion of aspects of crystal growth, the challenges we
face at the present time, and perspectives for the future.
6.
Workshop on Nanostructured Ceramics Interface
MCDCM has structured and developed the Workshop on Nanostructured
Ceramics Interface held in June at Anacã Hotel. In this workshop were given
classes with the objective of offering to the teachers and students a
comprehensive vision of Nanotechnology and its implications for the
economic and industrial development, as well as the basic concepts that
guide its development. There was an extensive discussion between the
teachers and
students the improvement on Nanostructured Ceramics
Interface.
42
7. Combining Nanostructured materials with alternative energy in order to
improve device efficiency
The inaugural MRS Symposium S, Nanostructured Materials in Alternative
Energy Devices, provided a dynamic overview of how nanostructured
materials can improve alternative energy devices. The main problem
concerning new technologies of energy conversion and storage remains on
the device's efficiency. Projects based on nanostructured materials can offer
new or improved technologies in devices involving electrochemical reactions
and heterogeneous catalysis such as fuel and solar cells, batteries, etc.
Nanoscale structures alter dramatically the surface reaction rates and
electrical transport throughout the material, causing a dramatic improvement
in energy storage, conversion and generation. During the symposium,
spectacular examples were shown to demonstrate the advantage of
nanostructured materials to fabricate devices with superior performance. M.
Grätzel, from EPFL, Switzerland, discussed recent results about dye sensitized
solar cells (DSSC), showing devices with very good performance (efficiency
higher than 11%). It was clear that modifications and new architectures of
semiconductor nanostructured thin films (fundamental part of DSSC and other
solar cells devices) are the best way to improve solar cell performance.
Significant results were also shown in the processing and performance of
lithium-ion batteries and fuel cells. Debra Rolison of Naval Research
Laboratory discussed the processing and design of new nanostructured
architectures in order to obtain lithium-Ion batteries with higher performances.
The sol-gel process showed to be the best option in order to obtain such
controlled nanostructures. The combination between nanostructured
materials and alternative energy devices is a promising way to develop a
wide range of new technologies for a healthy future and is an active research
area.
8. The Ceramic Center Hosts High School Teachers and Students
In this period were scheduled visits to the Ceramic Center of high school
teachers and students. The visits were held at the Group of Crystal Growth
and Ceramic Materials – USP and at the Interdisciplinary Laboratory of
Electrochemistry and Ceramics of the Department of Chemistry of UFSCar
and UNESP. These students, during a 8 hour period received explanations and
participated of mini-analyses in several pieces of equipment: X-ray
diffractometer, scanning electron microscope, atomic force microscope and
tunneling microscope. They were also given a short lecture on Molecular
Modeling using the first principles of Quantum Mechanics. The four modules
were taught in practical classes of 100 minutes. These courses are opened the
whole year, only needing that the high school is registered at USP or in LIECUFSCar.
The activities undertaken by the Ceramic Center were shown to be perfectly
aligned with such tendency of high school students getting in touch with
laboratories during scheduled visits. Therefore there is a team in the center
available to organize and carry out such diffusion work. High schools from the
cities of São Carlos, Cajuru and Catanduva have visited the Center.
43
9. Comic Book
Researchers of the MCDMC staff have developed a specific text of
elementary level to be distributed to the students during activities in schools
aiming to motivate them to read and to discuss themes on Materials Science.
This book has been used also along with the Ceramic Materials Education
Project. The chosen theme of the first book is clay. The second book will be
about glasses and recycling.
10. Production of 3D Animation
In this period were elaborated five 3D animations (films during 2 or 3 minutes).
They were exhibited in the high schools and during paper presentations in
Brazil and abroad. The basic objective of the animations is to show in a clear
and scientific way the development of the research activities of the Center,
moreover in nanostructured ceramics, nanoparticles, ceramics interfaces,
refractory corrosion, hair care and sensors. On the other hand, there has
been a great interest from the regional TV stations to show the animations
associated with the research activities undertaken by the Center, what
resulted in an average of one monthly interview in TV channel of highest
audience in the region. Nowadays this way of diffusion has already
guaranteed a space in the national media in closed TV channels.
11.
One Day of Undergraduate Student - Researchers of MCDMC have
participated of the open school day in the Diocesano School of São Carlos
presenting the comic book to stimulate the students for discussing about clay,
mineral exploration and electronic ceramics.
12.
Participation of the Center in National and International Reviews
a) The Ceramic Center, by means of Prof. Dr. Reginaldo Muccillo selects and
edits the Revista Cerâmica, official organism of the Brazilian Ceramic Society.
Prof. Dr. J. A. Varela and Prof. Dr. E. Longo, other members of the Center are
also members of the editorial committee of Revista Cerâmica.
44
b) The Center has also a strong participation in the review Revista Cerâmica
Informação, edited by Faenza Editrice do Brasil Ltda. Prof. Dr. J.O. Paschoal,
a member of the Center is the Technical – Scientific Editor of the review and
Prof. Dr. E. Longo is also one of the members of the technical – scientific
council of the review.
c) Members of the ceramic center had strong participation as reviewer of
international journal such as J. Am. Ceram Soc., Advanced Materials, J. Am.
Chem. Soc and others. The group has a member (Prof. Dr. Edson R. Leite) of
the editorial board of the J. Nanoscience and Nanotechnology.
13.
Extension Course for Teachers
A great amount of knowledge with a lot of practical work in the classroom, this was
the conclusion of the high school teachers that participated of the Extension Course
for Teachers. In this course were offered notions of fundamental chemistry from a
series of practical experiments, involving also video and 3D animation. The
participation of 70 teachers in the course has showed the great interest of the
teachers in getting up to date in order to make more dynamic their classes. On the
other hand, each participant received a set of 30 Craftsman Handouts, which were
employed in the teaching for the students in the ceramic art and in the connections
with chemistry and physics, associated with materials. This program incorporated
around 14000 high school students in São Paulo metropolitan region. In a second
step, the teachers will visit São Carlos, in order to know the modern techniques of
materials characterization, organized in 16 teacher-groups.
14. New Method for The Dosing of Structural Concrete.
The new dosing method was developed as a Master Thesis Theme under the
orientation of Prof. Dr. João B. Baldo. The rationale behind the new method
was the use of the principles of particle packing instead of pre-designed
requirements of the concrete mixes (as usually done). The water amount
determination was based on the parcels needed by each of the solid
components of the concrete. Finally a judicious mixing order was employed.
When these thred procedures were combined a structural concrete of the 40
MPa strength can be made using half of the cement normally used when the
current methods are used.
15. Development of an automated device - to stimulated the recycling of
used batteries for children and teenagers; project developed in association
with Colégio São Carlos.
16. Josephson junction - In this period we have contributed with two chapters
in books, one focused on the physical properties of ruthenocuprates, and the
other focused on the magnetic properties of Josephson junction arrays
devices. We have also developed an automated device to stimulated the
recycling of used batteries for children and teenagers. Finally, we have
participated in about eleven (11) interviews (newspapers, radio and TV)
reporting to the general society our scientific and technological activities.
45
17. Mini-Baja Project – The building of out of road monopost cars by
engineering students and their participation on national competitions. Prof.
Libardi of Lamarco is the Coordinator of this Program.
18.
Aero-Design Project - The building of low scale airplane models by
engineering students and their participation on national competitions. Prof.
Libardi of Lamarco is the Coordinator of this Program.
19. Professional Enhancement Program – Prof. Baldo of Lamarco gave a Short
Curse for 30 Engineers of Petrobrás ( Brazilian Oil Company) on Advanced
Refractory Castables under the auspices of The Brazilian Ceramic Society.
20. Prof. Libardi of LAMARCO - participated on the Organization of Summer
School in Materials Engineering for Students and High School Teachers of São
Public and Private Schools - Period – January 19, 20 e 21 2005, at the
Materials Engineering Department DEMa.
21.
Diffusion in Newspapers, Radio and TV
Last, but no least, it is important to comment the interface of MCDCM with
the media. In this period, information about Ceramic Materials was
disseminated by means of the written press, radio and TV.
Newspapers from São Carlos (Primeira Página, A Folha, Notícias FIESP/CIESP
and Tribuna), Araraquara (Imparcial), São José do Rio Preto (A Tribuna) and
Bauru (Journal da Cidade) (covered news about MCDCM achievements in
the Innovation Projects, emphasizing the development of materials made in
partnership with CSN, White Martins (PRAXAIR), CBMM, and Faber-Castell. O
Diário Oficial (Imprensa Oficial), O Estado de São Paulo and Folha de São
Paulo, a newspaper of undoubtfully national coverage, also covered the
achievements of MCDCM emphasizing also the advantages that the
industrial partners of MCDCM are having with such a fruitful partnership,
Magazines: Ciência Hoje, Terra da Gente (Rede Globo), Pesquisa (FAPESP),
Veja and Época.
The technical developments obtained on Materials (photoluminescence,
nanoparticles, and nanostructure)
benefited the whole region, showing
clearly the multiplying role of the University-Company interaction. As a
consequence, EPTV, the TV Company covering the whole Central Region
and National (Globo Reporter), Jornal da Band, Bom dia São Paulo (Rede
Globo) of São Paulo state, produced as series of reports covering the
activities of MCDCM and TV-Cabo Branco of the Paraíba, TV Piauí, TV
Paraná and TV Ponta Negra of the Rio Grande do Norte.
46
1.5 – Continuous Education and Dissemination Results
ACTIVITY
RESEARCH
SUBPROJECT
- School on Crystal Growth and Advanced Materials
Graduate
- Workshop on Nanostructured Ceramics Interface
- Combining Nanostructured materials with alternative
energy in order to improve device efficiency
“NANOPARTiCLES: OLD IDEAS WITH NEW USES”
Prof. Dr. Elson Longo
Place: Universidade Federal da Paraíba, João Pessoa, PB
- Mini-course
“SINTERING STUDY BY THERMAL ANALYSIS”
Prof. Dr. Jürgen Blumm
(Netzsch Geratebau GmbH)
Place: Materials Science Department
- Seminars
“Simulation of Ceramics Structures”
Prof. Dr. Juan Andres
(Universitat Jaume I)
Castellon-Espanha
Place: Chemical Department (DQ/UFSCar)
“Thin films ceramics”
Prof. Dr. Valerie Bouquet
Universitè de Rennes - France
Place: Chemical Department (DQ/UFSCar)
“Nanostructured materials”
Profa. Dra. Emmanuelle Orhan
Universitè de Limmognes – France
Place: Chemical Department (DQ/UFSCar)
47
Undergraduate and
Graduate Level
“New Materials for a New Millenium”
Prof. Dr. Elson Longo
MCDCM/LIEC-UFSCar
Place: Institut of Chemistry (IQ/UNESP-Bauru)
- State of São Paulo – Workshop on Nanostructured
Ceramics and Interface. This was the first workshop
organized by the center in this subject. Researchers of Brazil
and Europe showed recent researchers results in
nanostructured ceramics and interfaces.
Prof. Dr. Edson R. Leite
MCDCM/LIEC-UFSCar
- SBPMat Meeting (MRS)
III SBPMat (MRS) meeting was composed of thematic
symposia and interdisciplinary workshops, tackling
frontier subjects and/or subjects interesting to our
community.
Foz do Iguaçu, Paraná State, Brazil – Hotel Bourbon
48
ACTIVITY
RESEARCH
SUBPROJECT
Diffusion
The excellence of the activities of MCMDC has been Public
recognized by the Brazilian radio, TV and written press.
Several reports on such activities were publicized also with
the objective of contributing to the diffusion, throughout the
whole Brazilian society, of the science and technology
developed by MCMDC. As examples of such public
recognition and important diffusion support one can cite
the newspapers:
O Imparcial, Araraquara, SP.
A Folha, São Carlos, SP.
A Tribuna, São Carlos, SP.
Primeira Página, São Carlos, SP.
O Estado de São Paulo, São Paulo, SP.
Folha de São Paulo, SP.
A Tribuna, São J. Rio Preo, SP.
Jornal da Cidade, Bauru, SP.
Imprensa Oficial, SP.
As for magazines:
Ciência Hoje.
Terra da Gente.
Veja.
Época.
Notícias, a magazine from FIESP and CIESP.
Pesquisa, from FAPESP, one of the most active
R&D supporting organizations in Brazil
As for the TV, MCMDC can rely upon TV Company
covering the whole Central Region of São Paulo state,
produced as series of reports covering the activities of
MCDCM and TV-Cabo Branco of the Paraíba and TV
Ponta Negra of the Rio Grande do Norte, TV Piauí,
Globo Reporter, Bom Dia Brasil e Bom Dia São Paulo
(Rede Globo), Jornal da Band (TV Bandeirantes) who has
been helping in the public diffusion of a series of MCMDC
achievements, either related with its basic research, or
related to the industrial use of technologies developed by
MCMDC.
49
to
the