Multistep stochastic mechanism of polarization reversal in orthorhombic ferroelectrics

Y. A. Genenko; M. H. Zhang; I. S. Vorotiahin; R. Khachaturyan; Y. X. Liu; J. W. Li; K. Wang; J. Koruza

doi:10.1103/PhysRevB.104.184106

Multistep stochastic mechanism of polarization reversal in orthorhombic ferroelectrics

Y. A. Genenko^*, M. H. Zhang, I. S. Vorotiahin, R. Khachaturyan, Y. X. Liu, J. W. Li, K. Wang, J. Koruza

^*Corresponding author for this work

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

Abstract

A stochastic model of electric-field-driven polarization reversal in orthorhombic ferroelectrics is advanced, providing a description of their temporal electromechanical response. The theory accounts for all possible parallel and sequential switching events. Application of the model to the simultaneous measurements of polarization and strain kinetics in a lead-free orthorhombic (K,Na)NbO3-based ferroelectric ceramic over a wide timescale of seven orders of magnitude allowed identification of preferable polarization switching paths, fractions of individual switching processes, and their activation fields. Particularly, the analysis revealed substantial contributions of coherent non-180° switching events, which do not cause macroscopic strain and thus mimic 180° switching processes.

Original language	English
Article number	184106
Journal	Physical Review B
Volume	104
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.104.184106
Publication status	Published - 1 Nov 2021
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Fields of Expertise

Advanced Materials Science

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10.1103/PhysRevB.104.184106

Cite this

@article{a73a86602fcc4fcb8b0279f2394756b1,

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

abstract = "A stochastic model of electric-field-driven polarization reversal in orthorhombic ferroelectrics is advanced, providing a description of their temporal electromechanical response. The theory accounts for all possible parallel and sequential switching events. Application of the model to the simultaneous measurements of polarization and strain kinetics in a lead-free orthorhombic (K,Na)NbO3-based ferroelectric ceramic over a wide timescale of seven orders of magnitude allowed identification of preferable polarization switching paths, fractions of individual switching processes, and their activation fields. Particularly, the analysis revealed substantial contributions of coherent non-180° switching events, which do not cause macroscopic strain and thus mimic 180° switching processes.",

author = "Genenko, {Y. A.} and Zhang, {M. H.} and Vorotiahin, {I. S.} and R. Khachaturyan and Liu, {Y. X.} and Li, {J. W.} and K. Wang and J. Koruza",

note = "Funding Information: Authors greatly acknowledge AVL-AST for providing us the software AVL FIRE for conducting simulation work. We also would like to thank the Department of Mechanical Engg, NITK Surathkal for the support in providing AVL FIRE software facility. Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = nov,

day = "1",

doi = "10.1103/PhysRevB.104.184106",

language = "English",

volume = "104",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "18",

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TY - JOUR

T1 - Multistep stochastic mechanism of polarization reversal in orthorhombic ferroelectrics

AU - Genenko, Y. A.

AU - Zhang, M. H.

AU - Vorotiahin, I. S.

AU - Khachaturyan, R.

AU - Liu, Y. X.

AU - Li, J. W.

AU - Wang, K.

AU - Koruza, J.

N1 - Funding Information: Authors greatly acknowledge AVL-AST for providing us the software AVL FIRE for conducting simulation work. We also would like to thank the Department of Mechanical Engg, NITK Surathkal for the support in providing AVL FIRE software facility. Publisher Copyright: © 2021 American Physical Society.

PY - 2021/11/1

Y1 - 2021/11/1

N2 - A stochastic model of electric-field-driven polarization reversal in orthorhombic ferroelectrics is advanced, providing a description of their temporal electromechanical response. The theory accounts for all possible parallel and sequential switching events. Application of the model to the simultaneous measurements of polarization and strain kinetics in a lead-free orthorhombic (K,Na)NbO3-based ferroelectric ceramic over a wide timescale of seven orders of magnitude allowed identification of preferable polarization switching paths, fractions of individual switching processes, and their activation fields. Particularly, the analysis revealed substantial contributions of coherent non-180° switching events, which do not cause macroscopic strain and thus mimic 180° switching processes.

AB - A stochastic model of electric-field-driven polarization reversal in orthorhombic ferroelectrics is advanced, providing a description of their temporal electromechanical response. The theory accounts for all possible parallel and sequential switching events. Application of the model to the simultaneous measurements of polarization and strain kinetics in a lead-free orthorhombic (K,Na)NbO3-based ferroelectric ceramic over a wide timescale of seven orders of magnitude allowed identification of preferable polarization switching paths, fractions of individual switching processes, and their activation fields. Particularly, the analysis revealed substantial contributions of coherent non-180° switching events, which do not cause macroscopic strain and thus mimic 180° switching processes.

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U2 - 10.1103/PhysRevB.104.184106

DO - 10.1103/PhysRevB.104.184106

M3 - Article

AN - SCOPUS:85119195790

SN - 2469-9950

VL - 104

JO - Physical Review B

JF - Physical Review B

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M1 - 184106

ER -

Multistep stochastic mechanism of polarization reversal in orthorhombic ferroelectrics

Abstract

ASJC Scopus subject areas

Fields of Expertise

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