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

^*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

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.

Originalsprache	englisch
Aufsatznummer	064107
Fachzeitschrift	Physical Review B
Jahrgang	102
Ausgabenummer	6
DOIs	https://doi.org/10.1103/PhysRevB.102.064107
Publikationsstatus	Veröffentlicht - 1 Aug. 2020
Extern publiziert	Ja

ASJC Scopus subject areas

Elektronische, optische und magnetische Materialien
Physik der kondensierten Materie

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10.1103/PhysRevB.102.064107

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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",

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publisher = "American Physical Society",

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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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Multistep stochastic mechanism of polarization reversal in rhombohedral ferroelectrics

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ASJC Scopus subject areas

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