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Stochastic multistep polarization switching in ferroelectrics

Genenko, Yuri A. and Khachaturyan, R. and Schultheiß, Jan and Ossipova, Elena and Daniels, John E. and Koruza, Jurij (2018):
Stochastic multistep polarization switching in ferroelectrics.
In: Physical Review B, American Physical Society, p. 144101, 97, (14), ISSN 1098-0121, DOI: 10.1103/PhysRevB.97.144101, [Online-Edition: https://doi.org/10.1103/PhysRevB.97.144101],
[Article]

Abstract

Consecutive stochastic 90° polarization switching events, clearly resolved in recent experiments, are described by a nucleation and growth multistep model. It extends the classical Kolmogorov-Avrami-Ishibashi approach and includes possible consecutive 90°- and parallel 180° switching events. The model predicts the results of simultaneous time-resolved macroscopic measurements of polarization and strain, performed on a tetragonal Pb(Zr,Ti)O3 ceramic in a wide range of electric fields over a time domain of seven orders of magnitude. It allows the determination of the fractions of individual switching processes, their characteristic switching times,activation fields, and respective Avrami indices.

Item Type: Article
Erschienen: 2018
Creators: Genenko, Yuri A. and Khachaturyan, R. and Schultheiß, Jan and Ossipova, Elena and Daniels, John E. and Koruza, Jurij
Title: Stochastic multistep polarization switching in ferroelectrics
Language: English
Abstract:

Consecutive stochastic 90° polarization switching events, clearly resolved in recent experiments, are described by a nucleation and growth multistep model. It extends the classical Kolmogorov-Avrami-Ishibashi approach and includes possible consecutive 90°- and parallel 180° switching events. The model predicts the results of simultaneous time-resolved macroscopic measurements of polarization and strain, performed on a tetragonal Pb(Zr,Ti)O3 ceramic in a wide range of electric fields over a time domain of seven orders of magnitude. It allows the determination of the fractions of individual switching processes, their characteristic switching times,activation fields, and respective Avrami indices.

Journal or Publication Title: Physical Review B
Volume: 97
Number: 14
Publisher: American Physical Society
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: 05 Apr 2018 08:49
DOI: 10.1103/PhysRevB.97.144101
Official URL: https://doi.org/10.1103/PhysRevB.97.144101
Funders: This work was supported by the Deutsche Forschungsgemeinschaft (DFG) Grants No. GE 1171/7-1 and No. KO 5100/1-1. J.E.D. acknowledges financial support from Australian Research Council Discovery Projects No. DP120103968 and No. DP130100415. M. Weber is, acknowledged for the construction of the electrical HV setup. Dr. H. Kungl is acknowledged for the preparation of the sample.
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