Eichel, Rüdiger-A. (2007)
Defect structure of oxide ferroelectrics—valence state, site of incorporation, mechanisms of charge compensation and internal bias fields.
In: Journal of Electroceramics, 19 (1)
doi: 10.1007/s10832-007-9068-8
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The defect structure of aliovalent transition-metal and rare-earth functional centers in ferroelectric perovskite oxides is characterized by means of multifrequency electron paramagnetic resonance spectroscopy, assisted by density-functional theory calculations. The review is mainly focused on lead zirconate titanate (Pb[Zr x Ti1−x ]O3, PZT) compounds. However, where available also results on ferroelectric ’lead-free’ compounds are discussed. The results include the formation of charged (FeZrTi−VO) defect dipoles, causing internal bias fields, multivalence manganese centers, acceptor-type copper functional centers creating isolated oxygen vacancies that promote ionic conductivity, as well as GdPb donor-type centers. Moreover, the impact of the defect structure on macroscopic material properties is discussed.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Eichel, Rüdiger-A. |
| Art des Eintrags: | Bibliographie |
| Titel: | Defect structure of oxide ferroelectrics—valence state, site of incorporation, mechanisms of charge compensation and internal bias fields |
| Sprache: | Englisch |
| Publikationsjahr: | September 2007 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Electroceramics |
| Jahrgang/Volume einer Zeitschrift: | 19 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1007/s10832-007-9068-8 |
| Kurzbeschreibung (Abstract): | The defect structure of aliovalent transition-metal and rare-earth functional centers in ferroelectric perovskite oxides is characterized by means of multifrequency electron paramagnetic resonance spectroscopy, assisted by density-functional theory calculations. The review is mainly focused on lead zirconate titanate (Pb[Zr x Ti1−x ]O3, PZT) compounds. However, where available also results on ferroelectric ’lead-free’ compounds are discussed. The results include the formation of charged (FeZrTi−VO) defect dipoles, causing internal bias fields, multivalence manganese centers, acceptor-type copper functional centers creating isolated oxygen vacancies that promote ionic conductivity, as well as GdPb donor-type centers. Moreover, the impact of the defect structure on macroscopic material properties is discussed. |
| Freie Schlagworte: | Ferroelectrics - Lead zirconate titanate - PZT - Doping - Defect structure - Valence state - Site of incorporation - Charge compensation - Internal bias fields - Aging - Fatigue - EPR |
| Zusätzliche Informationen: | SFB 595 B1 |
| Fachbereich(e)/-gebiet(e): | DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung 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 Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 08 Aug 2011 14:13 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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