Multistep stochastic mechanism of polarization reversal in rhombohedral ferroelectrics

Y. A. Genenko; R. Khachaturyan; I. S. Vorotiahin; J. Schultheiß; J. E. Daniels; A. Grünebohm; J. Koruza

doi:10.1103/PhysRevB.102.064107

Multistep stochastic mechanism of polarization reversal in rhombohedral ferroelectrics

Y. A. Genenko^*, R. Khachaturyan, I. S. Vorotiahin, J. Schultheiß, J. E. Daniels, A. Grünebohm, J. Koruza

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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 the identification of preferable switching paths, fractions of individual switching processes, and their activation fields. In conjunction, the phenomenological Landau-Ginzburg-Devonshire theory is used to analyze the impact of an external field and stress on switching barriers, showing that residual mechanical stress may promote the fast switching.

Original language	English
Article number	064107
Journal	Physical Review B
Volume	102
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.102.064107
Publication status	Published - 1 Aug 2020
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.102.064107

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@article{e8f09f6e5dec49fdb530d45448762b0a,

title = "Multistep stochastic mechanism of polarization reversal in rhombohedral ferroelectrics",

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 the identification of preferable switching paths, fractions of individual switching processes, and their activation fields. In conjunction, the phenomenological Landau-Ginzburg-Devonshire theory is used to analyze the impact of an external field and stress on switching barriers, showing that residual mechanical stress may promote the fast switching.",

author = "Genenko, {Y. A.} and R. Khachaturyan and Vorotiahin, {I. S.} and J. Schulthei{\ss} and Daniels, {J. E.} and A. Gr{\"u}nebohm and J. Koruza",

note = "Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft (DFG) Grants No. 270195408 (GE 1171/7-1 and KO 5100/1-1) and No. 412303109 (GR 4792/2-1). J.E.D. acknowledges financial support from the Australian Research Council Discovery Projects DP120103968 and DP130100415. J.S. acknowledges the support of the Feodor Lynen Research Fellowship Program of the Alexander von Humboldt Foundation. H. Kungl is acknowledged for the preparation of the sample, and K. Albe and Y. Lysogorskiy are acknowledged for fruitful discussions. Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = aug,

day = "1",

doi = "10.1103/PhysRevB.102.064107",

language = "English",

volume = "102",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

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T1 - Multistep stochastic mechanism of polarization reversal in rhombohedral ferroelectrics

AU - Genenko, Y. A.

AU - Khachaturyan, R.

AU - Vorotiahin, I. S.

AU - Schultheiß, J.

AU - Daniels, J. E.

AU - Grünebohm, A.

AU - Koruza, J.

N1 - Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft (DFG) Grants No. 270195408 (GE 1171/7-1 and KO 5100/1-1) and No. 412303109 (GR 4792/2-1). J.E.D. acknowledges financial support from the Australian Research Council Discovery Projects DP120103968 and DP130100415. J.S. acknowledges the support of the Feodor Lynen Research Fellowship Program of the Alexander von Humboldt Foundation. H. Kungl is acknowledged for the preparation of the sample, and K. Albe and Y. Lysogorskiy are acknowledged for fruitful discussions. Publisher Copyright: © 2020 American Physical Society.

PY - 2020/8/1

Y1 - 2020/8/1

N2 - 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 the identification of preferable switching paths, fractions of individual switching processes, and their activation fields. In conjunction, the phenomenological Landau-Ginzburg-Devonshire theory is used to analyze the impact of an external field and stress on switching barriers, showing that residual mechanical stress may promote the fast switching.

AB - 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 the identification of preferable switching paths, fractions of individual switching processes, and their activation fields. In conjunction, the phenomenological Landau-Ginzburg-Devonshire theory is used to analyze the impact of an external field and stress on switching barriers, showing that residual mechanical stress may promote the fast switching.

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U2 - 10.1103/PhysRevB.102.064107

DO - 10.1103/PhysRevB.102.064107

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VL - 102

JO - Physical Review B

JF - Physical Review B

IS - 6

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ER -

Multistep stochastic mechanism of polarization reversal in rhombohedral ferroelectrics

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