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Processing of Manganese-Doped [Bi0.5Na0.5]TiO3 Ferroelectrics: Reduction and Oxidation Reactions During Calcination and Sintering

Aksel, Elena ; Jakes, Peter ; Erdem, Emre ; Smyth, Donald M. ; Ozarowski, Andrew ; van Tol, Johan ; Jones, Jacob L. ; Eichel, Rüdiger-A. :
Processing of Manganese-Doped [Bi0.5Na0.5]TiO3 Ferroelectrics: Reduction and Oxidation Reactions During Calcination and Sintering.
[Online-Edition: http://dx.doi.org/10.1111/j.1551-2916.2010.04249.x]
In: Journal of the American Ceramic Society, 94 (5) pp. 1363-1367. ISSN 00027820
[Artikel], (2011)
Note:

SFB 595 B1

Offizielle URL: http://dx.doi.org/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.

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.
Titel: Processing of Manganese-Doped [Bi0.5Na0.5]TiO3 Ferroelectrics: Reduction and Oxidation Reactions During Calcination and Sintering
Sprache: Englisch
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.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of the American Ceramic Society
Band: 94
(Heft-)Nummer: 5
Fachbereich(e)/-gebiet(e): Zentrale Einrichtungen > Sonderforschungsbereich 595 > B - Charakterisierung > B1
Zentrale Einrichtungen > Sonderforschungsbereich 595 > B - Charakterisierung
Zentrale Einrichtungen > Sonderforschungsbereich 595
Zentrale Einrichtungen
Hinterlegungsdatum: 08 Aug 2011 08:58
Offizielle URL: http://dx.doi.org/10.1111/j.1551-2916.2010.04249.x
Zusätzliche Informationen:

SFB 595 B1

ID-Nummer: 10.1111/j.1551-2916.2010.04249.x
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