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Statistical mechanical origin of hysteresis in ferroelectrics

Yang, Feng and Hu, Guangda and Xu, Bai-Xiang and Wu, Weibing and Yang, Changhong and Wu, Haitao (2012):
Statistical mechanical origin of hysteresis in ferroelectrics.
In: Journal of Applied Physics, American Institute of Physics, pp. 034113-(5), 112, (3), ISSN 00218979,
[Online-Edition: http://dx.doi.org/10.1063/1.4745054],
[Article]

Abstract

Hysteresis in ferroelectric materials is a strong non-linear phenomenon, the origin of which has drawn considerable attention. Based on the hopping probability function of the lattice-center ion crossing the ferroelectric double-well potential, a statistical mechanical theory is proposed to model ferroelectric hysteresis behavior. The hopping probability function is obtained from the statistical distribution function of ions in energy space, which is derived from the mathematical permutation and combination of the occupy-states of lattice-center ion. The calculated hysteresis agrees well with experimental measurements. In particular, the model provides interesting explanations to the polarization current and the coercive field, which differ from traditional microscopic models and thermodynamic theories.

Item Type: Article
Erschienen: 2012
Creators: Yang, Feng and Hu, Guangda and Xu, Bai-Xiang and Wu, Weibing and Yang, Changhong and Wu, Haitao
Title: Statistical mechanical origin of hysteresis in ferroelectrics
Language: English
Abstract:

Hysteresis in ferroelectric materials is a strong non-linear phenomenon, the origin of which has drawn considerable attention. Based on the hopping probability function of the lattice-center ion crossing the ferroelectric double-well potential, a statistical mechanical theory is proposed to model ferroelectric hysteresis behavior. The hopping probability function is obtained from the statistical distribution function of ions in energy space, which is derived from the mathematical permutation and combination of the occupy-states of lattice-center ion. The calculated hysteresis agrees well with experimental measurements. In particular, the model provides interesting explanations to the polarization current and the coercive field, which differ from traditional microscopic models and thermodynamic theories.

Journal or Publication Title: Journal of Applied Physics
Volume: 112
Number: 3
Publisher: American Institute of Physics
Uncontrolled Keywords: dielectric hysteresis, dielectric polarisation, ferroelectric coercive field, ferroelectric materials, probability, statistical mechanics
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Mechanics of functional Materials
Zentrale Einrichtungen
Exzellenzinitiative
Exzellenzinitiative > Graduate Schools > Graduate School of Computational Engineering (CE)
Exzellenzinitiative > Graduate Schools
Date Deposited: 18 Apr 2013 07:56
Official URL: http://dx.doi.org/10.1063/1.4745054
Identification Number: doi:10.1063/1.4745054
Funders: The work was supported by the National Natural Science Foundation of China (No. 11104116) and the Outstanding Young Scientists Foundation Grant of Shandong Province (No. BS2011CL003).
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