ON SHORT-RANGE ORDERING IN THE PEROVSKITE LEAD MAGNESIUM NIOBATE

被引：242

作者：

HILTON, AD ^{[1
]}

BARBER, DJ ^{[1
]}

RANDALL, CA ^{[1
]}

SHROUT, TR ^{[1
]}

机构：

[1] PENN STATE UNIV,MAT RES LAB,UNIVERSITY PK,PA 16802

来源：

JOURNAL OF MATERIALS SCIENCE | 1990年 / 25卷 / 08期

关键词：

D O I：

10.1007/BF00575371

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural ordering characteristics of lead magnesium niobate (PMN) and solid solutions (PMN-PT) of PMN with lead titanate have been investigated using transmission electron microscopy (TEM). It is proposed that short range, non-stoichiometric 1:1 ordering of the Mg and Nb cations on an F-centred superlattice generates space charges which dominate the kinetics of the ordering process and inhibit the development of long-range order. Furthermore, it is demonstrated that by introducing off-valent La3+ ions on to the A-site sublattice, the local charges can be at least partially-compensated and an increase in the extent of structural ordering is consequently observed. © 1990 Chapman and Hall Ltd.

引用

页码：3461 / 3466

页数：6

共 23 条

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