Erdem, Emre ; Eichel, Rüdiger-A. ; Kungl, Hans ; Hoffmann, Michael J. ; Ozarowski, Andrew ; Van Tol, Johan ; Brunei, L. C. (2008)
Characterization of (Fe<sub>Zr,Ti</sub>-V<sub>o</sub> <sup>ldrldr</sup>)<sup>ldr</sup> defect dipoles in (La,Fe)-codoped PZT 52.5/47.5 piezoelectric ceramics by multifrequency electron paramagnetic resonance spectroscopy.
In: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 55 (5)
doi: 10.1109/TUFFC.2008.757
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Ferroelectric 1 mol.% La3+ and 0.5 mol.% Fe3+ codoped Pb[Zr0.54Ti0.46]O3 ceramics were studied by means of multifrequency electron paramagnetic resonance (EPR) spectroscopy. The obtained results prove that iron is incorporated at the [Zr,Ti]-site, acting as an acceptor and building a charged (FeZr,Ti - Vo ldrldr)ldr defect dipole with a directly coordinated oxygen vacancy for partial charge compensation. This feature of the defect associates has hitherto been identified only in hard, exclusively Fe3+ -doped PZT compounds. The present results show, however, that a similar defect association of the Fe3+ functional center with a Vo ldrldr also exists in soft, donor-acceptor (La3+,Fe3+)-codoped PZT. According to models developed by Arlt et al. electric dipoles from defect associates, such as the (FeZr,Ti - Vo ldrldr)ldr defect associate, which may give rise to an internal bias field that is discussed being responsible for ferroelectric aging.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Erdem, Emre ; Eichel, Rüdiger-A. ; Kungl, Hans ; Hoffmann, Michael J. ; Ozarowski, Andrew ; Van Tol, Johan ; Brunei, L. C. |
| Art des Eintrags: | Bibliographie |
| Titel: | Characterization of (Fe<sub>Zr,Ti</sub>-V<sub>o</sub> <sup>ldrldr</sup>)<sup>ldr</sup> defect dipoles in (La,Fe)-codoped PZT 52.5/47.5 piezoelectric ceramics by multifrequency electron paramagnetic resonance spectroscopy |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2008 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control |
| Jahrgang/Volume einer Zeitschrift: | 55 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1109/TUFFC.2008.757 |
| Kurzbeschreibung (Abstract): | Ferroelectric 1 mol.% La3+ and 0.5 mol.% Fe3+ codoped Pb[Zr0.54Ti0.46]O3 ceramics were studied by means of multifrequency electron paramagnetic resonance (EPR) spectroscopy. The obtained results prove that iron is incorporated at the [Zr,Ti]-site, acting as an acceptor and building a charged (FeZr,Ti - Vo ldrldr)ldr defect dipole with a directly coordinated oxygen vacancy for partial charge compensation. This feature of the defect associates has hitherto been identified only in hard, exclusively Fe3+ -doped PZT compounds. The present results show, however, that a similar defect association of the Fe3+ functional center with a Vo ldrldr also exists in soft, donor-acceptor (La3+,Fe3+)-codoped PZT. According to models developed by Arlt et al. electric dipoles from defect associates, such as the (FeZr,Ti - Vo ldrldr)ldr defect associate, which may give rise to an internal bias field that is discussed being responsible for ferroelectric aging. |
| Zusätzliche Informationen: | SFB 595 Cooperation A2, B1 |
| Fachbereich(e)/-gebiet(e): | DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese > Teilprojekt A2: Herstellung und Charakterisierung von PZT-Keramiken mit definierter Defektchemie 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 > A - Synthese 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: | 27 Jul 2011 11:14 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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