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), pp. 074106. ISSN 00218979,
[Article]
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2005 |
| Creators: | Shur, Vladimir Ya. ; Nikolaeva, E. V. ; Shishkin, E. I. ; Baturin, Ivan S. ; Shur, Alevtina G. ; Utschig, Thomas ; Schlegel, Thorsten ; Lupascu, Doru C. |
| Title: | Deaging in Gd2(MoO4)3 by cyclic motion of a single planar domain wall |
| Language: | English |
| 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. |
| Journal or Publication Title: | Journal of Applied Physics |
| Journal Volume: | 98 |
| Issue Number: | 7 |
| Uncontrolled Keywords: | 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 |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials DFG-Collaborative Research Centres (incl. Transregio) DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres Zentrale Einrichtungen DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B5: Model experiments about interactions between ferroelectric domains with point defects and their agglomerates |
| Date Deposited: | 18 May 2011 15:20 |
| URL / URN: | http://dx.doi.org/10.1063/1.2077846 |
| Additional Information: | SFB 595 B5 |
| Identification Number: | doi:10.1063/1.2077846 |
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