Aksel, Elena ; Jakes, Peter ; Erdem, Emre ; Smyth, Donald M. ; Ozarowski, Andrew ; Van Tol, Johan ; Jones, Jacob L. ; Eichel, Rüdiger-A. (2011)
Processing of Manganese-Doped [Bi0.5Na0.5]TiO3 Ferroelectrics: Reduction and Oxidation Reactions During Calcination and Sintering.
In: Journal of the American Ceramic Society, 94 (5)
doi: 10.1111/j.1551-2916.2010.04249.x
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The effect of multivalent manganese doping on the defect structure is studied for the “lead-free” piezoelectric [Bi0.5Na0.5]TiO3 (BNT) by means of high-frequency electron paramagnetic resonance (EPR) spectroscopy. The results show that manganese is incorporated with di- and trivalent oxidation states on a titanium site, acting as an acceptor (Mn′Ti, Mn′′Ti). In particular, it is demonstrated that during calcination at 800°C the manganese functional centers are oxidized to Mn3+. Subsequent to the sintering at 1100°C, part of the trivalent manganese centers are reduced back to the initial Mn2+-oxidation state.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Aksel, Elena ; Jakes, Peter ; Erdem, Emre ; Smyth, Donald M. ; Ozarowski, Andrew ; Van Tol, Johan ; Jones, Jacob L. ; Eichel, Rüdiger-A. |
| Art des Eintrags: | Bibliographie |
| Titel: | Processing of Manganese-Doped [Bi0.5Na0.5]TiO3 Ferroelectrics: Reduction and Oxidation Reactions During Calcination and Sintering |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 94 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1111/j.1551-2916.2010.04249.x |
| Kurzbeschreibung (Abstract): | The effect of multivalent manganese doping on the defect structure is studied for the “lead-free” piezoelectric [Bi0.5Na0.5]TiO3 (BNT) by means of high-frequency electron paramagnetic resonance (EPR) spectroscopy. The results show that manganese is incorporated with di- and trivalent oxidation states on a titanium site, acting as an acceptor (Mn′Ti, Mn′′Ti). In particular, it is demonstrated that during calcination at 800°C the manganese functional centers are oxidized to Mn3+. Subsequent to the sintering at 1100°C, part of the trivalent manganese centers are reduced back to the initial Mn2+-oxidation state. |
| 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 08:58 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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