Multi-step stochastic mechanism of polarization reversal in rhombohedral ferroelectrics
Materials Science
2020-08-26 v2
Abstract
A stochastic model for the field-driven polarization reversal in rhombohedral ferroelectrics is developed, providing a description of their temporal electromechanical response. Application of the model to simultaneous measurements of polarization and strain kinetics in a rhombohedral Pb(Zr,Ti)O3 ceramic over a wide time window allows identification of preferable switching paths, fractions of individual switching processes, and their activation fields. Complementary, the phenomenological Landau-Ginzburg-Devenshire theory is used to analyze the impact of external field and stress on switching barriers showing that residual mechanical stress may promote the fast switching.
Keywords
Cite
@article{arxiv.2004.04966,
title = {Multi-step stochastic mechanism of polarization reversal in rhombohedral ferroelectrics},
author = {Yuri A. Genenko and Ruben Khachaturyan and Ivan S. Vorotiahin and Jan Schultheiß and John E. Daniels and Anna Grünebohm and Jurij Koruza},
journal= {arXiv preprint arXiv:2004.04966},
year = {2020}
}
Comments
33 pages, 9 figures