Erdem, Emre ; Drahus, Michael D. ; Eichel, Rüdiger-A. ; Kungl, Hans ; Hoffmann, Michael J. ; Ozarowski, Andrew ; Van Tol, Johan ; Brunel, Louis Claude (2008)
DEFECT STRUCTURE IN "SOFT" (Gd,Fe)-CODOPED PZT 52.5/47.5 PIEZOELECTRIC CERAMIC.
In: Functional Materials Letters, 1 (1)
doi: 10.1142/S1793604708000034
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Ferroelectric 1 mol% Gd3+ and 0.5 mol% Fe3+ codoped "soft" Pb[Zr0.525Ti0.475]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 (Fe'Zr,Ti - Vo°°)° defect dipole with a directly coordinated oxygen vacancy for partial charge compensation. As the La3+ ion is diamagnetic, no information is accessible about the donor. Gd3+ is an isoelectronic and paramagnetic probe for studying A-site. On the other hand, the donor forms no defect associates with lattice vacancies and rather exists as an "isolated" functional center. Consequently, also the lead vacancies that are created for charge compensation have to exist as isolated centers in compound.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Erdem, Emre ; Drahus, Michael D. ; Eichel, Rüdiger-A. ; Kungl, Hans ; Hoffmann, Michael J. ; Ozarowski, Andrew ; Van Tol, Johan ; Brunel, Louis Claude |
| Art des Eintrags: | Bibliographie |
| Titel: | DEFECT STRUCTURE IN "SOFT" (Gd,Fe)-CODOPED PZT 52.5/47.5 PIEZOELECTRIC CERAMIC |
| Sprache: | Englisch |
| Publikationsjahr: | Juni 2008 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Functional Materials Letters |
| Jahrgang/Volume einer Zeitschrift: | 1 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1142/S1793604708000034 |
| Kurzbeschreibung (Abstract): | Ferroelectric 1 mol% Gd3+ and 0.5 mol% Fe3+ codoped "soft" Pb[Zr0.525Ti0.475]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 (Fe'Zr,Ti - Vo°°)° defect dipole with a directly coordinated oxygen vacancy for partial charge compensation. As the La3+ ion is diamagnetic, no information is accessible about the donor. Gd3+ is an isoelectronic and paramagnetic probe for studying A-site. On the other hand, the donor forms no defect associates with lattice vacancies and rather exists as an "isolated" functional center. Consequently, also the lead vacancies that are created for charge compensation have to exist as isolated centers in compound. |
| Freie Schlagworte: | Lead zirconate titanate; PZT; soft piezoelectrics; gadolinium iron codoping; oxygen vacancy; defect dipole; charge compensation; multi-frequency EPR |
| 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 10:54 |
| Letzte Änderung: | 09 Jun 2020 08:19 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum