Now showing items 1-10 of 44
Influence of oxygen atmosphere on LiNbO3 thin films prepared by Pechini process
(Proceedings of the International Conference on Microelectronics, 2004-07-27) [Trabalho apresentado em evento]
Thin films of lithium niobate were deposited on the Pt/Ti/SiO2 (111) substrates by the polymeric precursor method (Pechini process). Annealing in static air and oxygen atmosphere was performed at 500°C for 3 hours. The ...
Núcleos de Ensino da Unesp: artigos 2008
(Coleção PROGRAD (UNESP), 2011) [Livro]
Low-temperature synthesis of nanosized bismuth ferrite by the soft chemical method
(Ceramics International, 2013-01-01) [Artigo]
This paper describes research on a simple low-temperature synthesis route to prepare bismuth ferrite nanopowders by the polymeric precursor method using bismuth and iron nitrates. BiFeO 3 (BFO) nanopowders were characterized ...
Investigation of Ferroelectric Layered Perovskite Barium Bismuth Tantalate Prepared by Solid-State Reaction
(Ferroelectrics, 2012-01-01) [Artigo]
Barium bismuth tantalate-BaBiTa2O9 has been prepared by conventional method based on solid-state reaction using BaCO3, Bi2O3 and Ta2O5 as starting materials. It was added excess of 10 mol% of bismuth aiming to improve the ...
Structure, ferroelectric/magnetoelectric properties and leakage current density of (Bi0.85Nd0.15)FeO3 thin films
(Journal of Alloys and Compounds, 2011-04-28) [Artigo]
In this paper, we report on the structure, ferroelectric/magnetoelectric properties and improvement of leakage current density of (Bi0.85Nd0.15)FeO3 (BNFO) thin films deposited on Pt(1 1 1)/Ti/SiO2/Si substrates from the ...
Dielectric properties of pure and lanthanum modified bismuth titanate thin films
(Journal of Alloys and Compounds, 2008-04-24) [Artigo]
We investigated the dielectric properties of pure and lanthanum modified bismuth titanate thin films obtained by the polymeric precursor method. X-ray diffraction of the film annealed at 300 degrees C for 2h indicates a ...
Ferroelectric and piezoelectric properties of bismuth layered thin films grown on (100) Pt electrodes
(Journal of Materials Processing Technology, 2008-01-21) [Artigo]
The effect of film orientation on piezoelectric and ferroelectric properties of bismuth layered compounds deposited on platinum coated silicon substrates was investigated. Piezo-force microscopy was used to probe the local ...
Leakage current behavior of Bi3.25La0.75Ti3O12 ferroelectric thin films deposited on different bottom electrodes
(Materials Chemistry and Physics, 2008-01-15) [Artigo]
Bi3.25La0.75Ti3O12 (BLT) thin films were grown on LaNiO3 (LNO), RuO2 (RuO2) and La0.5Sr0.5CoO3 (LSCO) bottom electrodes by using the polymeric precursor method and microwave furnace. The bottom electrode is found to be an ...
Lanthanum-doped Bi4Ti3O12 prepared by the soft chemical method: Rietveld analysis and piezoelectric properties
(Ceramics International, 2008-03-01) [Artigo]
Bi4-xLaxTi3O12 (BLT) thin films and powders with x ranging from 0 to 0.75 were prepared by the polymeric precursor solution. The effect of lanthanum on the structure of BIT powders was investigated by Rietveld Method. The ...
Structural and dielectric properties of Ba0.5Sr0.5(SnxTi1-x)O-3 ceramics obtained by the soft chemical method
(Journal of Alloys and Compounds, 2009-05-27) [Artigo]
Ba0.5Sr0.5(SnxTi1-x)O-3 ceramics with different compositions (x = 0, 0.05, 0.10 and 0.20) were synthesized by the soft chemical method. X-ray diffraction patterns and Rietveld refinements revealed that these ceramics ...