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Synthesis and Characterization of Ferroelectric Thin Films and Ceramics

Grant number: 00/01991-0
Support type:Research Projects - Thematic Grants
Duration: September 01, 2000 - May 31, 2005
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal Investigator:José Arana Varela
Grantee:José Arana Varela
Home Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
Co-Principal Investigators:Carlos de Oliveira Paiva Santos ; Mario Cilense
Associated grant(s):02/01934-2 - Letrical properties of screen printed batio3 thick films., AR.EXT
Associated scholarship(s):01/13743-4 - Conversion of the enviromental heat to electricity by means of ferroelectrics, BP.PD
01/02560-6 - Grain boundary phenomena at barium titanate doped by vapour phase diffusion, BP.PD


[...] The main objective is to promote a quality substantial improvement on the understanding of these films and ceramics, when compared with former research developed by the group and with the literature. This proposal aims to the obtation of ferroelectric thin films and ceramics through chemical processes, in the amorphous or crystalline form and that exhibit ferroelectric, dielectric, piezoelectric, electrooptic properties for application in devices in the microelectronic such as: capacitors, actuators, FERAM and DRAM memories, microactuators, displays, modulators, sensors etc. [...] The main goal of this project, therefore, is to obtain ferroelectric and thin films through the use of polymeric precursors, with properties equal or superior to that obtained by the methods reported in the literature (AU)

Articles published in Pesquisa FAPESP Magazine about the research grant:
The memory of the future 

Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SIMÕES, A. Z.; GONZALEZ, A. H.; ZAGHETE, M. A.; LONGO, E.; VARELA, J. A. Effect of thermal treatment temperature on the crystallinity and morphology of LiTaO3 thin films prepared from polymeric precursor method. Journal of Electroceramics, v. 13, n. 1-3, p. 353-359, jul. 2004.
BRANKOVIC, Z.; BRANKOVIC, G.; VARELA, J. A. Microstructural investigation of the PZT films prepared from the suspension of nanocrystalline powders. Journal of the European Ceramic Society, v. 24, n. 6, p. 1945-1948, ago. 2004.
BRANKOVIC‚ G.; BRANKOVIC‚ Z.; DAVOLOS‚ MR; CILENSE‚ M.; VARELA‚ JA. Influence of the common varistor dopants (CoO‚ Cr2 O3 and Nb2 O5) on the structural properties of SnO2 ceramics. MATERIALS CHARACTERIZATION, v. 52, n. 4, p. 243-251, 2004.
MASTELARO‚ V.R.; FOSCHINI‚ C.R.; VARELA‚ J.A. Grazing incidence X-ray diffraction and atomic force microscopy analysis of BaBi2 Ta2 O9 thin films. Thin Solid Films, v. 415, n. 1, p. 57-63, 2002.

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