The invar effect and phase transitions in Cs2Znl4 crystals

被引：6

作者：

Bagautdinov, BS ^{[1
]}

Shekhtman, VS ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia

来源：

PHYSICS OF THE SOLID STATE | 1999年 / 41卷 / 01期

关键词：

D O I：

10.1134/1.1130742

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An in situ x-ray diffraction study of Cs2ZnI4 crystals performed in the 4.2-300 K temperature range is reported. The lattice parameter measurements have revealed three anomalies corresponding to phase transitions. The thermal expansion coefficient along the c axis was found to vanish in the region of incommensurate and commensurate modulated phases, 120-96 K (the invar effect). A possible crystallographic model relating modulated atomic displacements to the invar effect is discussed. (C) 1999 American Institute of Physics. [S1063-7834(99)02901-9].

引用

页码：123 / 127

页数：5