Meštrić, Hrvoje ; Eichel, Rüdiger-A. ; Dinse, Klaus-Peter ; Ozarowski, Andrew ; Van Tol, Johan ; Brunel, Louis Claude (2004)
High-frequency electron paramagnetic resonance investigation of the Fe[sup 3+] impurity center in polycrystalline PbTiO[sub 3] in its ferroelectric phase.
In: Journal of Applied Physics, 96 (12)
doi: 10.1063/1.1808477
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The intrinsic iron(III) impurity center in polycrystalline lead titanate was investigated by means of high-frequency electron paramagnetic resonance spectroscopy in order to determine the local-environment sensitive fine-structure parameter D. At a spectrometer frequency of 190 GHz, a spectral analysis of a powder sample was unambiguously possible. The observed mean value D=+35.28 GHz can be rationalized if Fe3+ ions substitute for Ti4+ at the B site of the perovskite ABO3 lattice forming a directly coordinated FeTi′–VO⋅⋅ defect associate. A consistent fit of the multifrequency data necessitated the use of a distribution of the D values with a variance of about 1 GHz. This statistical distribution of values is probably related to more distant defects and vacancies.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2004 |
| Autor(en): | Meštrić, Hrvoje ; Eichel, Rüdiger-A. ; Dinse, Klaus-Peter ; Ozarowski, Andrew ; Van Tol, Johan ; Brunel, Louis Claude |
| Art des Eintrags: | Bibliographie |
| Titel: | High-frequency electron paramagnetic resonance investigation of the Fe[sup 3+] impurity center in polycrystalline PbTiO[sub 3] in its ferroelectric phase |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2004 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Physics |
| Jahrgang/Volume einer Zeitschrift: | 96 |
| (Heft-)Nummer: | 12 |
| DOI: | 10.1063/1.1808477 |
| Kurzbeschreibung (Abstract): | The intrinsic iron(III) impurity center in polycrystalline lead titanate was investigated by means of high-frequency electron paramagnetic resonance spectroscopy in order to determine the local-environment sensitive fine-structure parameter D. At a spectrometer frequency of 190 GHz, a spectral analysis of a powder sample was unambiguously possible. The observed mean value D=+35.28 GHz can be rationalized if Fe3+ ions substitute for Ti4+ at the B site of the perovskite ABO3 lattice forming a directly coordinated FeTi′–VO⋅⋅ defect associate. A consistent fit of the multifrequency data necessitated the use of a distribution of the D values with a variance of about 1 GHz. This statistical distribution of values is probably related to more distant defects and vacancies. |
| Freie Schlagworte: | lead compounds, iron, powders, ferroelectric ceramics, EPR spectroscopy, vacancies (crystal), statistical distributions, spectral analysis |
| 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 14:19 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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