Dielectric, Electromechanical, and Elastic Properties of Rb1-x(NH4)xH2PO4 Single Crystals

被引：0
|
作者：
Korotkov, L. N. [1 ]
Likhovaya, D. V. [2 ]
Levitskii, R. R. [3 ]
Zachek, I. R. [3 ]
机构：
[1] Voronezh State Tech Univ, Moskovskii Pr 14, Voronezh 394026, Russia
[2] Minist Emergency Situat Russian Federat, Voronezh Inst State Fire Fighting Serv, Ul Krasnoznamennaya 231, Voronezh 394052, Russia
[3] Natl Acad Sci Ukraine, Inst Phys Condensed Syst, Ul Sventsitskogo 1, UA-79011 Lvov, Ukraine
来源：
PHYSICS OF THE SOLID STATE | 2017年 / 59卷 / 01期
关键词：
THERMODYNAMICS; PERMITTIVITY; RBH2PO4;
D O I：
10.1134/S1063783417010176
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The longitudinal dielectric, piezoelectric, and elastic characteristics of ferroelectric RbH2PO4 and antiferroelectric NH4H2PO4 crystals are calculated in terms of the modified model of proton ordering with allowance for the piezoelectric coupling in an approximation of a four-particle cluster. The results obtained agree well with known experimental data. Along with this, the electromechanical properties of a Rb-0.2(NH4)(0.8)H2PO4 single crystal undergoing an antiferroelectric phase transition have been studied experimentally over a wide temperature range. The model predictions and the experimental data agree qualitatively.
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页码：83 / 88
页数：6
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