MODEL THEORY OF FERROELECTRIC AND OTHER STRUCTURAL PHASE-TRANSITIONS OF 1ST AND 2ND ORDER

被引：7
作者：
ALBERS, J
机构：
[1] Universität des Saarlandes, Saarbrücken
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 1979年 / 91卷 / 02期
关键词：
D O I：
10.1002/pssb.2220910216
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A model is presented in which the appearance of displacive phase transitions is explained by short‐range internal forces. Electrically charged or uncharged parts of the structure are squeezed out of symmetrical positions and thus lead to a symmetry‐lowering and to phase transitions of ferroelectric or pure structural types. A simple microscopic potential describes transitions of first and second order in good agreement with data of ferroelectric crystals. The Taylor series expansion of this potential allows the comparison with Devonshire's theory. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA
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页码：509 / 520
页数：12
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