Synthesis and thermal stability of a new barium polytitanate compound, Ba1.054Ti0.946O2.946

被引：12

作者：

Filimonov, DS ^{[1
]}

Liu, ZK ^{[1
]}

Randall, CA ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Inst, Ctr Dielect Studies, Mat Res Lab 144, University Pk, PA 16802 USA

来源：

MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 03期

基金：

美国国家科学基金会;

关键词：

oxides; chemical synthesis; X-ray diffraction; phase equilibria;

D O I：

10.1016/S0025-5408(01)00815-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new barium polytitanate Ba1.054Ti0.946O2.946 was synthesized by a citrate chemical route. The X-ray powder pattern of this compound was indexed to a hexagonal system, with space group P6(3)/mmc and lattice parameters a = 5.722(4) and c = 13.996(8) Angstrom. Prolonged annealing of the Ba1.054Ti0.946O2.946 in air at temperatures above 1150degreesC leads to a peritectoid decomposition reaction yielding Ba2TiO4 and cubic-BaTiO3, consistent with the known phase diagram. A thermal stability study of this compound demonstrates it to be a stable phase under ambient conditions and metastable under low oxygen partial pressures. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：467 / 473

页数：7

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