SYMMETRY-BREAKING TRANSITIONS IN CSCL-TYPE SOLIDS

被引：2

作者：

FRANZEN, HF ^{[1
]}

CHEN, BH ^{[1
]}

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1990年 / 88卷 / 01期

关键词：

D O I：

10.1016/0022-4596(90)90221-I

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The Landau theory of symmetry and phase transitions is applied to the CsCl-type structure to determine the symmetry-allowed second-order phase transitions at the k = 0 and k = (a* + b*) 2 special points. Two distortions of CsCl-type that have been found experimentally, to the rhombohedral LiPb structure and to the orthorhombic AuCd-type structure, were found to meet the conditions of the theory. The AuCd-type was found to allow a further continuous distortion to the monoclinic NiTi structure that plays an important role in the shape memory of this material. © 1990.

引用

页码：247 / 249

页数：3

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