Multi-step stochastic mechanism of polarization reversal in rhombohedral ferroelectrics
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 cer...
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| creator | Genenko, Yuri A Khachaturyan, Ruben Vorotiahin, Ivan S Schultheiß, Jan Daniels, John E Grünebohm, Anna Koruza, Jurij |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.2004.04966 |
| format | Article |
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| subjects | Ferroelectric materials Ferroelectricity Ferroelectrics Impact analysis Lead zirconate titanates Physics - Materials Science Polarization Stochastic models Switching Windows (intervals) Zirconium |
| title | Multi-step stochastic mechanism of polarization reversal in rhombohedral ferroelectrics |
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