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Influence of polymerization on the synthesis of SrTiO3: Part I. Characteristics of the polymeric precursors and their thermal decomposition
(Ceramics International, 1995-12-01) [Artigo]
The influence of polymerization on the thermal decomposition of polymeric precursors and phase formation was investigated during synthesis of SrTiO3. The precipitation of polymeric precursor in acetone produced a more ...
Mechanochemical synthesis of barium titanate
(Journal of the European Ceramic Society, 2005-01-01) [Artigo]
A powder mixture of BaO and TiO2, was mechanochemically treated in a planetary ball mill in an air atmosphere for up to 4 h, using zirconium oxide vial and zirconium oxide balls as the milling medium. Mechanochemical ...
Topotatic-like phase transformation of amorphous lead titanate to cubic lead titanate
(Journal of the American Ceramic Society, 2002-09-01) [Artigo]
The crystallization process of lead titanate (PT) prepared using the polymeric precursor method was investigated using X-ray diffractometry, Raman spectroscopy, electron microscopy, and X-ray absorption spectroscopy ...
Effect of Ta2O5 doping on the electrical properties of 0.99SnO(2)center dot 0.01CoO ceramic
(Journal of Materials Science, 2000-01-01) [Artigo]
The effect of Ta2O5 doping in 0.99SnO(2). 0.01CoO on the microstructure and electrical properties of this ceramic were analyzed in this study. The grain size was found to decrease from 6.87 mu m to 5.68 mu m when the Ta2O5 ...
Synthesis of PbTiO3 by use of polymeric precursors
(Materials Letters, 1998-09-01) [Artigo]
Lead titanate powders were synthesized through the use of polymeric precursors according to the Pechini Process. The polymeric precursor was calcined at temperatures ranging from 300 to 600°C for 1 or 2 h. X-ray diffraction ...
Effect of the excess of bismuth on the morphology and properties of the BaBi2Ta2O9 ceramics
(Materials Letters, 2005-03-01) [Artigo]
In this study, the effect of bismuth content on the crystal structure, morphology and electric properties of barium-bismuth-tantalate (BBT) ceramics was explored with the aid of X-ray diffraction (XRD), scanning electron ...
Room temperature photoluminescence of BCT prepared by Complex Polymerization Method
(Current Applied Physics, 2010-01-01) [Artigo]
It was used the Complex Polymerization Method to synthesize barium calcium titanate powders (BCT). Crystalline Ba(0.8)Ca(0.2)TiO(3) perovskite-type phase could be identified by X-ray diffraction and confirmed by Raman ...
Structural XANES characterization of Ca0.99Sm0.01TiO3 perovskite and correlation with photoluminescence emission
(Chemical Physics Letters, 2012-08-20) [Artigo]
In this work, CaTiO3:Sm (CT:Sm) were prepared by a soft chemical processing at different annealing temperatures starting with a disordered structure and reaching an ordered one, with the propose to understand the relationship ...
Ferroelectric characteristics of SrBi4Ti4O15 thin films grown on Pt/Ti/SiO2/Si substrates by the soft chemical method
(Materials Letters, 2006-07-01) [Artigo]
Ferroelectric SrBi4Ti4O15 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. X-ray diffraction patterns of the films ...
Characterization of lanthanum-doped bismuth titanate thin films prepared by polymeric precursor method
(Materials Letters, 2004-09-01) [Artigo]
Lanthanum-modified bismuth titanate, Bi4-xLaxTi3O12 (BLT), with x ranging from 0 to 0.75 was grown on Pt/Ti/SiO2/Si substrates using a polymeric precursor solution and spin-coating method. The dielectric constant of highly ...