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In situ solid state oxidation reaction for La1-xSrxMnO3 (x=0, 0.1, 0.2 and 0.3) formation
(Elsevier B.V., 2001-05-01)
In situ solid state oxidation reaction for an alternative La1-xSrxMnO3 (x = 0, 0.1, 0.2 and 0.3) formation is reported. Samples have been obtained by using strontium peroxide, lanthanum and manganese (III) oxide reagents. ...
Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O-3 ceramic
(Elsevier B.V., 2011-11-01)
In this work, we report the Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O-3 ceramic synthesized by solid state reaction. This ceramic was characterized by X-ray diffraction, ...
Strong violet-blue light photoluminescence emission at room temperature in SrZrO3: Joint experimental and theoretical study
(Pergamon-Elsevier B.V. Ltd, 2008-06-01)
Ultrafine ordered and disordered SrZrO3 powders were prepared by the polymeric precursor method. The structural evolution from structural disorder to order was monitored by X-ray diffraction and X-ray absorption near-edge ...
Photoluminescent properties of lead zirconate powders obtained by the polymeric precursor method
(Elsevier B.V., 2012-08-01)
Lead zirconate powders, obtained by the polymeric precursor method, were annealed for 2 h at temperatures from 300 to 800 degrees C. The effect of heat treatment on structural defects and photoluminescent behavior was ...
The influence of the sintering system on PMN properties
(2003-03-15)
PMN powder samples with PbO excess of 0, 1,2 and 3% were submitted to the pressing and sintering at 1200°C for 4h with a heating rate of 3°C/min. A new sintering system, developed at our laboratories, was used. It allows ...
Structural XANES characterization of Ca0.99Sm0.01TiO3 perovskite and correlation with photoluminescence emission
(Elsevier B.V., 2012-08-20)
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 ...
Microwave-hydrothermal synthesis of perovskite bismuth ferrite nanoparticles
(Pergamon-Elsevier B.V. Ltd, 2011-12-01)
Hydrothermal microwave method (HTMW) was used to synthesize crystalline bismuth ferrite (BiFeO(3)) nanoparticles (BFO) in the temperature of 180 degrees C with times ranging from 5 min to 1 h. BFO nanoparticles were ...
Effect of precursor solution on the formation of perovskite phase of Pb(Mg-1/Nb-3(2/3))O-3 thin films
(Elsevier B.V., 2002-05-01)
Precursor solutions for Pb(Mg1/3Nb2/3)O-3 (PMN) synthesis were obtained by Pechini's method. The influence of the concentration of organic materials on the phase formation has been studied. For this purpose, PMN solutions ...
First principles calculations on the origin of violet-blue and green light photoluminescence emission in SrZrO3 and SrTiO3 perovskites
(Springer, 2009-11-01)
The photoluminescence (PL) emission from SrZrO3 (SZ) and SrTiO3 (ST) crystalline, quasi-crystalline, and quasi-amorphous samples, prepared by the polymeric precursor method, was examined by ab initio quantum mechanical ...