Group-theoretical analysis of octahedral tilting in ferroelectric perovskites

被引：202
作者：
Stokes, HT [1 ]
Kisi, EH
Hatch, DM
Howard, CJ
机构：
[1] Brigham Young Univ, Dept Phys & Astron, Provo, UT 84602 USA
[2] Univ Newcastle, Sch Engn, Menai, NSW 2234, Australia
[3] Australian Nucl Sci & Technol Org, Menai, NSW 2234, Australia
[4] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia
来源：
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE | 2002年 / 58卷
关键词：
D O I：
10.1107/S0108768102015756
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Group-theoretical methods are used to analyze perovskite structures where both ferroelectric cation displacements and simple tilting of octahedral units are present. This results in a list of 40 different structures, each with a unique space-group symmetry. The list is compared with that of Aleksandrov & Bartolome [ Phase Transit. (2001), 74, 255-335] and a number of differences are found. The group-subgroup relationships between the structures are also determined, along with an indication of those phase transitions that must be first order by Landau theory.
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收藏
页码：934 / 938
页数：5
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