Zhang, Lixue ; Erdem, Emre ; Ren, Xiaobing ; Eichel, Rüdiger-A. (2008)
Reorientation of (Mn[sub Ti][sup ʺ]−V[sub O][sup ●●])[sup ×] defect dipoles in acceptor-modified BaTiO[sub 3] single crystals: An electron paramagnetic resonance study.
In: Applied Physics Letters, 93 (20)
doi: 10.1063/1.3006327
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The effect of external electric fields on the orientation of (MnTi″−VO••)× defect dipoles in ferroelectric BaTiO3 single crystals and its interplay with the domain structure were investigated by means of electron paramagnetic resonance (EPR) spectroscopy and optical microscopy. The results show that in specimens aged in the ferroelectric state for a defined time, so-termed ferroelectrically aged, the (MnTi″−VO••)× defect dipoles orient along the direction of spontaneous polarization and follow the domain switching upon poling with correspondingly high electric fields. A comparison of the EPR signal in poled aged single-domain samples to that in naturally aged multidomain samples indicates a similar reorientation process of the defect dipole, which means that dipole reorientation rather requires long time, thermal energy, and high electric fields, i.e., more energy.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Zhang, Lixue ; Erdem, Emre ; Ren, Xiaobing ; Eichel, Rüdiger-A. |
| Art des Eintrags: | Bibliographie |
| Titel: | Reorientation of (Mn[sub Ti][sup ʺ]−V[sub O][sup ●●])[sup ×] defect dipoles in acceptor-modified BaTiO[sub 3] single crystals: An electron paramagnetic resonance study |
| Sprache: | Englisch |
| Publikationsjahr: | November 2008 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 93 |
| (Heft-)Nummer: | 20 |
| DOI: | 10.1063/1.3006327 |
| Kurzbeschreibung (Abstract): | The effect of external electric fields on the orientation of (MnTi″−VO••)× defect dipoles in ferroelectric BaTiO3 single crystals and its interplay with the domain structure were investigated by means of electron paramagnetic resonance (EPR) spectroscopy and optical microscopy. The results show that in specimens aged in the ferroelectric state for a defined time, so-termed ferroelectrically aged, the (MnTi″−VO••)× defect dipoles orient along the direction of spontaneous polarization and follow the domain switching upon poling with correspondingly high electric fields. A comparison of the EPR signal in poled aged single-domain samples to that in naturally aged multidomain samples indicates a similar reorientation process of the defect dipole, which means that dipole reorientation rather requires long time, thermal energy, and high electric fields, i.e., more energy. |
| Freie Schlagworte: | barium compounds, dielectric polarisation, doping, electric domains, ferroelectric materials, ferroelectric switching, manganese, optical microscopy, paramagnetic resonance, vacancies (crystal) |
| Zusätzliche Informationen: | SFB 595 B1 |
| Fachbereich(e)/-gebiet(e): | DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung > Teilprojekt B1: EPR Untersuchung von Defekten in ferroelektrischen keramischen Werkstoffen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 08 Aug 2011 10:40 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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