Genenko, Yuri A. ; Zhang, Mao-Hua ; Vorotiahin, Ivan S. ; Khachaturyan, R. ; Liu, Y.-X. ; Li, J.-W. ; Wang, K. ; Koruza, Jurij (2021)
Multistep stochastic mechanism of polarization reversal in orthorhombic ferroelectrics.
In: Physical Review B, 104 (18)
doi: 10.1103/PhysRevB.104.184106
Artikel, Bibliographie
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Genenko, Yuri A. ; Zhang, Mao-Hua ; Vorotiahin, Ivan S. ; Khachaturyan, R. ; Liu, Y.-X. ; Li, J.-W. ; Wang, K. ; Koruza, Jurij |
| Art des Eintrags: | Bibliographie |
| Titel: | Multistep stochastic mechanism of polarization reversal in orthorhombic ferroelectrics |
| Sprache: | Englisch |
| Publikationsjahr: | 1 November 2021 |
| Verlag: | APS Physics |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| Jahrgang/Volume einer Zeitschrift: | 104 |
| (Heft-)Nummer: | 18 |
| DOI: | 10.1103/PhysRevB.104.184106 |
| URL / URN: | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.104.1... |
| Kurzbeschreibung (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. |
| Freie Schlagworte: | Ferroelectricity, Strain, Ceramics, Ferroelectrics, Polycrystalline materials, Polarization, Stochastic analysis |
| Zusätzliche Informationen: | Paper 184106 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| TU-Projekte: | DFG|GE1171/8-1|Kooperative Kinetik |
| Hinterlegungsdatum: | 10 Nov 2021 07:08 |
| Letzte Änderung: | 10 Nov 2021 07:08 |
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