Order parameter and its fluctuations in Hg2Br2 model ferroelastics

被引：0
|
作者：
Yu. F. Markov
K. Knorr
E. M. Roginskiĭ
机构：
[1] Russian Academy of Sciences,Ioffe Physicotechnical Institute
[2] Üniversität des Saarlandes,undefined
来源：
Physics of the Solid State | 2007年 / 49卷
关键词：
63.70.+h; 61.10.Nz;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The Bragg and diffuse reflections from different X points of the Brillouin zone boundary of the Hg2Br2 crystal in the paraphase are studied. The intensities of these reflections are related to the order parameter and its fluctuations. The temperature dependence of the order parameter and its fluctuations is analyzed, and the values of the critical exponents indicating closeness of the phase transition in these crystals to the tricritical point are determined.
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页码：523 / 527
页数：4
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