Preparation of fine powders with perovskite structure from metal alkoxides

被引：21

作者：

Fukui, T ^{[1
]}

Sakurai, C ^{[1
]}

Okuyama, M ^{[1
]}

机构：

[1] COLLOID RES INST,KITAKYUSHU,FUKUOKA 805,JAPAN

来源：

JOURNAL OF MATERIALS SCIENCE | 1997年 / 32卷 / 01期

关键词：

D O I：

10.1023/A:1018504022130

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The preparation of perovskite powders was investigated by the metal alkoxide methods. The complex alkoxide as a precursor was hydrolysed under specific conditions, and submicrometre powders of perovskite compounds differing in composition, BaTiO3, Ba(Mg1/3Nb2/3)O-3, PbTiO3, and Pb(Mg1/3Nb2/3)O-3, could be obtained. The simultaneous use of a dipolar a protic solvent, such as acetone, etc., with ethanol was found to be effective for the preparation of the spherical or nearly spherical powders with submicrometre diameter. The submicrometre powders were formed through nucleation-aggregation, but not by the usual nucleation-grain growth. Such powder formation, and the affinity of the solvent for the diffusion layer surrounding the colloidal particle, are important. The powders obtained here could be crystallized to the desired crystalline phase at lower temperatures.

引用

页码：189 / 196

页数：8

共 27 条

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[3]

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