Erdem, Emre ; Eichel, Rüdiger-A. ; Kungl, Hans ; Hoffmann, Michael J. ; Ozarowski, Andrew ; Van Tol, Hans ; Brunel, Louis Claude (2007)
Local symmetry-reduction in tetragonal (La,Fe)-codoped Pb[Zr0.4Ti0.6]O3 piezoelectric ceramics.
In: Physica Scripta, (T129)
doi: 10.1088/0031-8949/2007/T129/003
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Ferroelectric Pb[Zr0.4Ti0.6]O3 ceramics codoped with La3+ and Fe3+ at dopant concentrations of 1.0 and 0.5 mol. %, respectively, were investigated by means of multifrequency electron paramagnetic resonance (EPR) spectroscopy. The results prove that iron is incorporated at the [Zr,Ti]-site, acts as an acceptor and favors the creation of charged (Fe ' Zr, Ti- VO••)• defect dipoles that may give rise to internal bias fields also for 'soft' piezoelectric compounds. In particular, the iron functional center site symmetry was investigated. A multi-site situation was observed in which the orientation of the (Fe ' Zr, Ti- VO••)• defect dipole with respect to the orientation of spontaneous polarization is responsible for a (Fe ' Zr, Ti- VO••)• center of 'tetragonal' and a different center of 'rhombic' local site symmetry.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Erdem, Emre ; Eichel, Rüdiger-A. ; Kungl, Hans ; Hoffmann, Michael J. ; Ozarowski, Andrew ; Van Tol, Hans ; Brunel, Louis Claude |
| Art des Eintrags: | Bibliographie |
| Titel: | Local symmetry-reduction in tetragonal (La,Fe)-codoped Pb[Zr0.4Ti0.6]O3 piezoelectric ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 22 November 2007 |
| Verlag: | Institute of Physics Publishing (IOP) |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physica Scripta |
| (Heft-)Nummer: | T129 |
| DOI: | 10.1088/0031-8949/2007/T129/003 |
| URL / URN: | http://dx.doi.org/10.1088/0031-8949/2007/T129/003 |
| Kurzbeschreibung (Abstract): | Ferroelectric Pb[Zr0.4Ti0.6]O3 ceramics codoped with La3+ and Fe3+ at dopant concentrations of 1.0 and 0.5 mol. %, respectively, were investigated by means of multifrequency electron paramagnetic resonance (EPR) spectroscopy. The results prove that iron is incorporated at the [Zr,Ti]-site, acts as an acceptor and favors the creation of charged (Fe ' Zr, Ti- VO••)• defect dipoles that may give rise to internal bias fields also for 'soft' piezoelectric compounds. In particular, the iron functional center site symmetry was investigated. A multi-site situation was observed in which the orientation of the (Fe ' Zr, Ti- VO••)• defect dipole with respect to the orientation of spontaneous polarization is responsible for a (Fe ' Zr, Ti- VO••)• center of 'tetragonal' and a different center of 'rhombic' local site symmetry. |
| Zusätzliche Informationen: | SFB 595 Cooperation A2, B1 |
| Fachbereich(e)/-gebiet(e): | DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese 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 DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > B - Charakterisierung > Teilprojekt B1: EPR Untersuchung von Defekten in ferroelektrischen keramischen Werkstoffen |
| Hinterlegungsdatum: | 27 Jul 2011 11:33 |
| Letzte Änderung: | 02 Mär 2022 14:07 |
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