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Preparation and properties of ferroelectric BaTiO3 thin films produced by the polymeric precursor method
(2000-08-01)
Ferroelectric barium titanate thin films were produced by the polymeric precursor method. In this technique, the desired metal cations are chelated in a solution using a hydroxycarboxylic acid as the chelating agent. Barium ...
Photoluminescence of disordered ABO3 perovskites
(2000-08-07)
Intense photoluminescence in highly disordered (amorphous) BaTiO3, PbTiO3, and SrTiO3 prepared by the polymeric precursor method was observed at room temperature. The emission band maxima from the three materials are in ...
Influence of the modifier on the short and long range disorder of stannate perovskites
(Elsevier B.V. Sa, 2009-05-12)
Ca(1-x)Sr(x)SnO(3) powders (x = 0, 0.25,0.50,0.75 and 1) were synthesized by the polymeric precursor method. This method is derived from the Pechini one, being quite simple, yielding a high chemical homogeneity. This work ...
Microstructure and electrical properties of perovskite (Pb, La)TiO3 thin film deposited at low temperature by the polymeric precursor method
(Kluwer Academic Publ, 2001-07-01)
High-quality (Pb, La)TiO3 ferroelectric thin films were successfully prepared on a Pt(111)/Ti/SiO2/Si(100) substrate for the first time by spin coating, using the polymeric precursor method. The X-ray diffraction patterns ...
Synthesis of LaNiO3 perovskite by the proteic gel modified method using collagen
(Associação Sergipana de Ciências, 2014)
Chemical stability and electrical properties of Nb doped BaCe 0.9Y 0.1O 3-δ as a high temperature proton conducting electrolyte for IT-SOFC
(2013-01-01)
BaCe 0.9-xNb xY 0.1O 3-δ (where x=0, 0.01, 0.03 and 0.05) powders were synthesized by solid-state reaction to investigate the influence of Nb concentration on chemical stability and electrical properties of the sintered ...
Enhanced stability in CO2 of Ta doped BaCe0.9Y 0.1O3-δ electrolyte for intermediate temperature SOFCs
(2013-04-01)
The influence of Ta concentration on the stability of BaCe 0.9-xTaxY0.1O3-δ (where x=0.01, 0.03 and 0.05) powders and sintered samples in CO2, their microstructure and electrical properties were investigated. The ceramic ...
Efeito da adição simultânea de sementes e dopantes na microestrutura e propriedade dielétrica da cerâmica 0,93 PZN - 0,07 BT
(Associação Brasileira de Cerâmica, 2000-03-01)
O método de Pechini bem como o uso da adição simultânea de partículas sementes e solução dopante de BaTiO3 foram usados para preparar o Niobato de chumbo e zinco (PZN). Os pós calcinados a 800 ° C/2 h e 900 ° C/1 h, os ...
Thickness dependence of structure and piezoelectric properties at nanoscale of polycrystalline lead zirconate titanate thin films
(2013-05-14)
Lead zirconate titanate Pb(Zr0.50Ti0.50)O3 (PZT) thin films were deposited by a polymeric chemical method on Pt(111)/Ti/SiO2/Si substrates to understand the mechanisms of phase transformations and the effect of film thickness ...
Obtenção da fase peroviskita via microemulsão
(Editora Unesp, 2002-01-01)
Pequenas partículas de fase peroviskita de BaMnO3 foram preparadas por dois métodos: a rota da coprecipitação convencional (RCC) e o método convencional de microemulsão (MCM). As técnicas instrumentais utilizadas para ...