Anomalies of dielectric, elastic and electromechanical properties of K0.25(NH4)0.75H2PO4 single crystal in the vicinity of antiferroelectric phase transition

被引：2

作者：

Korotkov, L. N. ^{[1
]}

Likhovaya, D. V. ^{[1
]}

Levitskii, R. R. ^{[2
]}

Sorokov, S. I. ^{[2
]}

Vdovych, A. S. ^{[2
]}

机构：

[1] Voronezh State Tech Univ, Voronezh, Russia

[2] Inst Condensed Matter Phys, Lvov, Ukraine

来源：

SOLID STATE COMMUNICATIONS | 2013年 / 160卷

基金：

俄罗斯基础研究基金会;

关键词：

H-bonded antiferroelectric; Antiferroelectric phase transition; Dielectric; piezoelectric and elastic anomalies; Phase transition; MIXED-CRYSTALS; PROTON GLASS; K1-X(NH4)XH2PO4; NH4H2PO4; RELAXOR;

D O I：

10.1016/j.ssc.2013.02.010

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The dielectric permittivities (epsilon(11) and epsilon(33)), elastic compliance (S-66) and piezoelectric constant (d(36)) for the K-0.25( NH4)(0.75)H2PO4 single crystal were studied near antiferroelectric phase transition temperature (T-N). It was found that diffused maximums in both the epsilon(11)(T) and the epsilon(33)(T) dependences as well as in the d(36)(T) dependences are observed above T-N, while narrowed peak in S-66(T) curve is located below T-N. Analysis of experimental results speaks in favor of two-stage AFE -> PE phase transition in the crystal under study. Below T-N the drastic decreasing of electromechanical coupling factor (k(36)) is found. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：52 / 55

页数：4

共 33 条

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Choudhury, Rajul Ranjan
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BULLETIN OF MATERIALS SCIENCE, 2018, 41 (01)
[2] Distribution of Internal Random Fields in the Vicinity of Diffused Ferroelectric Phase Transition in K0.81(NH4)0.19H2PO4 Single Crystal
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Korotkov, L. N.
FERROELECTRICS LETTERS SECTION, 2015, 42 (1-3) : 27 - 34
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PHYSICS OF THE SOLID STATE, 2013, 55 (02) : 342 - 345
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FERROELECTRICS, 2010, 397 : 43 - 53
[5] A single crystal neutron diffraction study on mixed crystal (K)0.25(NH4)0.75H2PO4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {(K)}_{0.25}(\hbox {NH}_{4})_{0.75}\hbox {H}_{2}\hbox {PO}_{4}$$\end{document}: tuning of short strong hydrogen bonds by ionic interactions
Rajul Ranjan Choudhury
R Chitra
Bulletin of Materials Science, 2018, 41 (1)
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FERROELECTRICS, 2010, 397 : 135 - 141
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PHYSICS OF THE SOLID STATE, 1998, 40 (12) : 1998 - 2001
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Physics of the Solid State, 1998, 40 : 1998 - 2001
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FERROELECTRICS, 2002, 272 : 2217 - 2222

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