Shur, Vladimir Ya. ; Nikolaeva, E. V. ; Shishkin, E. I. ; Baturin, Ivan S. ; Shur, Alevtina G. ; Utschig, Thomas ; Schlegel, Thorsten ; Lupascu, Doru C. (2005)
Deaging in Gd2(MoO4)3 by cyclic motion of a single planar domain wall.
In: Journal of Applied Physics, 98 (7)
doi: 10.1063/1.2077846
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The motion of a single planar 180° domain wall was studied in single-crystalline gadolinium molybdate, Gd2(MoO4)3. The switching current and the instantaneous wall positions were recorded using polarized light in an optical microscope and subsequent image processing. A pronounced deaging (wake-up) effect is observed represented by an increase of domain-wall shift during cyclic switching at constant voltage amplitude. The experimental data are compared to computer simulations taking into account the kinetic imprint effect under ac cycling. The latter is the change of the spatial distribution of the internal bias field during cycling. It is shown that deaging (wake-up) arises for aged (screened) initial states. After long enough cycling, the spatial distribution of the internal bias field becomes steady state and the wall motion becomes reproducible in all its details. The final distribution of the internal bias field does not depend on the initial state of the sample. The activation energies for deaging and aging are equal within the experimental uncertainty and thus very likely stem from the same micromechanism.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2005 |
| Autor(en): | Shur, Vladimir Ya. ; Nikolaeva, E. V. ; Shishkin, E. I. ; Baturin, Ivan S. ; Shur, Alevtina G. ; Utschig, Thomas ; Schlegel, Thorsten ; Lupascu, Doru C. |
| Art des Eintrags: | Bibliographie |
| Titel: | Deaging in Gd2(MoO4)3 by cyclic motion of a single planar domain wall |
| Sprache: | Englisch |
| Publikationsjahr: | Oktober 2005 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 98 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1063/1.2077846 |
| Kurzbeschreibung (Abstract): | The motion of a single planar 180° domain wall was studied in single-crystalline gadolinium molybdate, Gd2(MoO4)3. The switching current and the instantaneous wall positions were recorded using polarized light in an optical microscope and subsequent image processing. A pronounced deaging (wake-up) effect is observed represented by an increase of domain-wall shift during cyclic switching at constant voltage amplitude. The experimental data are compared to computer simulations taking into account the kinetic imprint effect under ac cycling. The latter is the change of the spatial distribution of the internal bias field during cycling. It is shown that deaging (wake-up) arises for aged (screened) initial states. After long enough cycling, the spatial distribution of the internal bias field becomes steady state and the wall motion becomes reproducible in all its details. The final distribution of the internal bias field does not depend on the initial state of the sample. The activation energies for deaging and aging are equal within the experimental uncertainty and thus very likely stem from the same micromechanism. |
| Freie Schlagworte: | INTERFACE SCREENING MODEL; PBZRXTI1-XO3 THIN-FILMS; GADOLINIUM MOLYBDATE; FERROELECTRIC-FILMS; KINETIC APPROACH; FATIGUE; DYNAMICS; IMPRINT; ORIGIN; gadolinium compounds, ageing, ferroelectric materials, electric domain walls, ferroelectric switching |
| Zusätzliche Informationen: | SFB 595 B5 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung > Teilprojekt B5: Modellversuche zur Wechselwirkung ferroelektrischer Domänen mit Punktdefekten und deren Agglomeraten |
| Hinterlegungsdatum: | 18 Mai 2011 15:20 |
| Letzte Änderung: | 30 Jan 2019 09:58 |
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