Now showing items 1-10 of 52
SYNTHESIS OF ULTRA-FINE CRYSTALLINE ZRXTI1-XO4 POWDER BY POLYMERIC PRECURSOR METHOD
(Materials Letters, 1995-02-01) [Artigo]
Reactive ZrxTi1-xO4 (x=0.65, 0.50 and 0.35) powder was prepared by the polymeric precursor method. Studies by X-ray diffraction (XRD), nitrogen adsorption/desorption, and thermogravimetric analysis (TG) showed that powders ...
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 ...
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 ...
Synthesis of nanocrystalline tetragonal zirconia by a polymeric organometallic method
(Applied Organometallic Chemistry, 1999-07-01) [Artigo]
A polymeric precursor method based on the Pechini process was successfully used to synthesize zirconia-12 mol% ceria ceramic powders, the influence of the main process variables (citric acid-ethylene glycol ratio, citric ...
Structural and electrical properties of SrBi2Nb2O9 thin films prepared by chemical aqueous solution at low temperature
(Materials Letters, 1999-07-01) [Artigo]
SrBi2Nb2O9 (SBN) thin films were prepared by the polymeric precursors method and deposited by dip coating onto Pt/Ti/SiO2/Si(100) substrates. The dip-coated films were specular and crack-free and crystallized during firing ...
Thickness dependence of leakage current in BaBi2Ta2O9 thin films
(Applied Physics Letters, 1999-07-26) [Artigo]
BaBi2Ta2O9 thin films having a layered structure were fabricated by metalorganic solution deposition technique. The films exhibited good structural, dielectric, and insulating properties. The room temperature resistivity ...
Synthesis and sintering of ultra fine NaNbO3 powder by use of polymeric precursors
(Materials Letters, 1996-09-01) [Artigo]
Ultra-fine NaNbO3 powder was prepared by the use of polymeric precursors. X-ray diffraction (XRD) results showed that this niobate nucleates from the amorphous precursor, with no intermediate phases, at low temperature ...
Synthesis and characterization of PLZT (9/65/35) by the Pechini method and partial oxalate
(Materials Letters, 1998-05-01) [Artigo]
ZrTiO4 (ZT), obtained by the Pechini method, was used as precursor for obtaining PLZT (lead lanthanum zirconium titanate). An aqueous solution of oxalic acid was prepared with particles of ZT, Pb(NO3)(2) and La2O3. After ...
A NEW SNO2-BASED VARISTOR SYSTEM
(Journal of Materials Science Letters, 1995-05-15) [Artigo]
Mechanism of phase formation in Pb(ZrxTi1-x)O3 synthesized by a partial oxalate method
(Journal of the American Ceramic Society, 1996-06-01) [Artigo]
The phase formation mechanism, as well as the morphotropic phase boundary, of lead zirconate titanate (PZT) processed by a partial oxalate method was investigated by simultaneous thermal analysis (TG-DTA) and by qualitative ...