MONOVALENT AND HETEROVALENT SUBSTITUTIONS IN BATIO3 SINGLE-CRYSTALS - EFFECTS ON PHASE-TRANSITIONS

被引：6

作者：

GODEFROY, G

JANNOT, B

MICHELCALENDINI, FM

机构：

[1] Laboratoire de Physique du Solide, Universiteé de Bourgogne

来源：

PHASE TRANSITIONS | 1991年 / 33卷 / 1-4期

关键词：

BATIO3; DEFECTS; PHASE TRANSITIONS; LANDAU THEORY; LATTICE DYNAMICS; RELAXATOR FERROELECTRICS; ELECTRONIC STRUCTURES; CHEMICAL BONDS;

D O I：

10.1080/01411599108207706

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

It is well known that BaTiO3 exhibits four phase transitions (1460°C 135°C, 5°C, —90°C). The most extensively discussed transition is the paraelectric-ferroelectric one at 135°C: displacive with an overdamped soft mode, order—disorder or relaxator ferroelectric? Homovalent and heterovalent substitutions change the phenomenological Landau approach of the transition, the lattice dynamics, the electronic structures and the covalency of oxygen bonds. © 1991, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：3 / 15

页数：13

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