Genenko, Yuri A. and Wehner, Jens and von Seggern, Heinz (2013):
Self-consistent model of polarization switching kinetics in disordered ferroelectrics.
In: Journal of Applied Physics, 114 (8), pp. 084101(1-6). AIP Publishing LLC, ISSN 00218979,
[Article]
Official URL: http://dx.doi.org/10.1063/1.4818951
Abstract
A self-consistent two-dimensional model of polarization switching in polycrystalline ferroelectrics is developed. It accounts for the statistical distribution of the local switching times due to the random spatial field distribution as well as for the feedback effect of the depolarization field changing during the switching process. Thereby the polarization response of each single-crystalline grain is modeled in the spirit of the Kolmogorov-Avrami-Ishibashi model while the electric field in the system is evaluated by a finite-element method at every iteration step. The results exhibit fair agreement with experiments on bulk ferroelectrics.
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