The invar effect and phase transitions in Cs2ZnI4 crystals

被引：0
|
作者：
B. Sh. Bagautdinov
V. Sh. Shekhtman
机构：
[1] Russian Academy of Sciences,Institute of Solid
来源：
Physics of the Solid State | 1999年 / 41卷
关键词：
Spectroscopy; Phase Transition; State Physics; Thermal Expansion; Expansion Coefficient;
D O I：
暂无
中图分类号：
学科分类号：
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.
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页码：123 / 127
页数：4
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