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Stochastic model of dispersive multi-step polarization switching in ferroelectrics due to spatial electric field distribution

Khachaturyan, R. and Schultheiß, J. and Koruza, J. and Genenko, Y. A. (2019):
Stochastic model of dispersive multi-step polarization switching in ferroelectrics due to spatial electric field distribution.
In: Applied Physics Letters, AIP Publishing, pp. 222902(1)-222902(5), 114, (22), ISSN 0003-6951,
DOI: 10.1063/1.5099235,
[Online-Edition: https://doi.org/10.1063/1.5099235],
[Article]

Abstract

A stochastic model for polarization switching in tetragonal ferroelectric ceramics is introduced, which includes sequential 90°- and parallel180°-switching processes and accounts for the dispersion of characteristic switching times due to a nonuniform spatial distribution of theapplied field. It presents merging of the recent multistep stochastic mechanism with the earlier nucleation limited switching and inhomoge-neous field mechanism models. The model provides a much better description of simultaneous polarization and strain responses over a widetime window and a deeper insight into the microscopic switching mechanisms, as is exemplarily shown by comparison with measurementson lead zirconate titanate.

Item Type: Article
Erschienen: 2019
Creators: Khachaturyan, R. and Schultheiß, J. and Koruza, J. and Genenko, Y. A.
Title: Stochastic model of dispersive multi-step polarization switching in ferroelectrics due to spatial electric field distribution
Language: English
Abstract:

A stochastic model for polarization switching in tetragonal ferroelectric ceramics is introduced, which includes sequential 90°- and parallel180°-switching processes and accounts for the dispersion of characteristic switching times due to a nonuniform spatial distribution of theapplied field. It presents merging of the recent multistep stochastic mechanism with the earlier nucleation limited switching and inhomoge-neous field mechanism models. The model provides a much better description of simultaneous polarization and strain responses over a widetime window and a deeper insight into the microscopic switching mechanisms, as is exemplarily shown by comparison with measurementson lead zirconate titanate.

Journal or Publication Title: Applied Physics Letters
Volume: 114
Number: 22
Publisher: AIP Publishing
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 > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 25 Sep 2019 05:30
DOI: 10.1063/1.5099235
Official URL: https://doi.org/10.1063/1.5099235
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