Vorotiahin, Ivan S. ; Morozovska, Anna N. ; Eliseev, Eugene A. ; Genenko, Yuri A. (2017)
Flexocoupling impact on the kinetics of polarization reversal.
In: Physical Review B, 95 (1)
doi: 10.1103/PhysRevB.95.014104
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The impact of flexoelectric coupling on polarization reversal and space-charge variation in thin films of ferroelectric semiconductors has been studied theoretically. The relaxation-type Landau-Khalatnikov equation together with the Poisson equation and the theory of elasticity equations have been used to calculate in a self-consistentway the spatial-temporal development of ferroelectric polarization, electric potential, space charge, elastic stresses and strains. The analysis of the obtained results reveals a moderate increase in the flexocoupling influence on the polarization, elastic strain, electric potential, and space-charge development with a decrease in the ferroelectric film thickness. In contrast, the dependence of polarization switching time on the applied electric field is remarkably affected by the flexocoupling strength. The polarization reversal process consists typically of two stages; the first stage has no characteristic time, whereas the second one exhibits a switching time strongly dependent on the applied electric field.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Vorotiahin, Ivan S. ; Morozovska, Anna N. ; Eliseev, Eugene A. ; Genenko, Yuri A. |
| Art des Eintrags: | Bibliographie |
| Titel: | Flexocoupling impact on the kinetics of polarization reversal |
| Sprache: | Englisch |
| Publikationsjahr: | 10 Januar 2017 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| Jahrgang/Volume einer Zeitschrift: | 95 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1103/PhysRevB.95.014104 |
| Kurzbeschreibung (Abstract): | The impact of flexoelectric coupling on polarization reversal and space-charge variation in thin films of ferroelectric semiconductors has been studied theoretically. The relaxation-type Landau-Khalatnikov equation together with the Poisson equation and the theory of elasticity equations have been used to calculate in a self-consistentway the spatial-temporal development of ferroelectric polarization, electric potential, space charge, elastic stresses and strains. The analysis of the obtained results reveals a moderate increase in the flexocoupling influence on the polarization, elastic strain, electric potential, and space-charge development with a decrease in the ferroelectric film thickness. In contrast, the dependence of polarization switching time on the applied electric field is remarkably affected by the flexocoupling strength. The polarization reversal process consists typically of two stages; the first stage has no characteristic time, whereas the second one exhibits a switching time strongly dependent on the applied electric field. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 24 Mär 2017 12:21 |
| Letzte Änderung: | 24 Mär 2017 12:21 |
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