Dielectric Nonlinearity of (NH sub(4)) sub(3)H(SeO sub(4)) sub(2) Crystal

The results of dielectric measurements on (NH sub(4)) sub(3)H(SeO sub(4)) sub(2) crystal near the ferroelectric phase transition are presented. The experimental data are described using a dielectric state equation. The coefficients A and B are estimated for several temperatures in paraelectric phase...

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Bibliographic Details
Published in:Ferroelectrics 2012-01, Vol.426 (1), p.72-80
Main Authors: Jankowski, M, Cach, R, Dacko, S, Czapla, Z
Format: Article
Language:English
Subjects:
Crystals
Dielectrics
Equations of state
Ferroelectric materials
Nonlinearity
Phase transformations
Polarization
Spontaneous
Online Access:Get full text
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Summary:The results of dielectric measurements on (NH sub(4)) sub(3)H(SeO sub(4)) sub(2) crystal near the ferroelectric phase transition are presented. The experimental data are described using a dielectric state equation. The coefficients A and B are estimated for several temperatures in paraelectric phase. The measurement at constant temperatures revealed dependence of the effective nonlinearity coefficient B on temperature in a range of T sub(c) + 14.3 K. Measurements of spontaneous polarization allow determining B, C coefficient in ferroelectric phase.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2012.671110