Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4187
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Title: Modeling saturated and unsaturated ferroelectric hysteresis loops : an analytical approach
Authors: Tsang, CH
Wong, CK
Shin, FG
Issue Date: 15-Oct-2005
Source: Journal of applied physics, 15 Oct. 2005, v. 98, no. 8, 084103, p. 1-9
Abstract: In ferroelectric materials, hysteresis behavior is very difficult to model due to its nonlinear and history-dependent characteristics. Among approaches that are able to describe unsaturated loops, many of them are either very complicated (numerical procedures must be employed) or the resulting loops contain some undesirable or defective features. In this work, a simple hysteresis model based on a special construction of the Preisach function is proposed. Explicit expressions for the polarization-field (P-E) responses under increasing and decreasing applied fields have been derived. The saturated and unsaturated P-E loops can be conveniently calculated by piecing together such responses. The technique is widely applicable to the modeling of ferroelectric hysteresis behavior of ceramics and polymers. As examples we study the applied field dependence of dielectric permittivity of a ferroelectric film and the remanent polarization of ferroelectric composites after ac poling. We find that the model predictions agree well with the experimental results.
Keywords: Ferroelectric thin films
Composite materials
Dielectric hysteresis
Dielectric polarisation
Permittivity
Publisher: American Institute of Physics
Journal: Journal of applied physics 
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.2103417
Rights: © 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in C. H. Tsang, C. K. Wong & F. G. Shin, J. Appl. Phys. 98, 084103 (2005) and may be found at http://link.aip.org/link/?jap/98/084103.
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