Spontaneous piezoelectric effect as order parameter in (NH4)2CuBr4•2H2O crystal

被引：4
|
作者：
Tylczynski, Z. [1 ]
Wiesner, M. [1 ]
Trzaskowska, A. [1 ]
机构：
[1] Adam Mickiewicz Univ, Fac Phys, Umultowska 85, PL-61614 Poznan, Poland
来源：
PHYSICA B-CONDENSED MATTER | 2016年 / 500卷
关键词：
Secondary ferroics; Phase transitions; Piezoelectricity; Dielectric properties; PHASE-TRANSITION; SINGLE-CRYSTAL; NH4CL; BR;
D O I：
10.1016/j.physb.2016.07.014
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Temperature change of piezoelectric properties of (NH4)(2)CuBr4 center dot 2H(2)O crystal in the low -temperature ferroelastoelectric phase is studied. The macroscopic order parameter is proved to be the h(36) component of the spontaneous piezoelectric tensor. The critical exponent related with the phase transition is alpha=0.60 +/- 0.05. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：85 / 88
页数：4
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