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

Aksel, Elena and Jakes, Peter and Erdem, Emre and Smyth, Donald M. and Ozarowski, Andrew and van Tol, Johan and Jones, Jacob L. and 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, pp. 1363-1367, 94, (5), ISSN 00027820, [Online-Edition: http://dx.doi.org/10.1111/j.1551-2916.2010.04249.x],
[Article]

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.

Item Type: Article
Erschienen: 2011
Creators: Aksel, Elena and Jakes, Peter and Erdem, Emre and Smyth, Donald M. and Ozarowski, Andrew and van Tol, Johan and Jones, Jacob L. and Eichel, Rüdiger-A.
Title: Processing of Manganese-Doped [Bi0.5Na0.5]TiO3 Ferroelectrics: Reduction and Oxidation Reactions During Calcination and Sintering
Language: English
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.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 94
Number: 5
Divisions: DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B1: EPR-Investigations of defects in ferroelectric ceramic material
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 08 Aug 2011 08:58
Official URL: http://dx.doi.org/10.1111/j.1551-2916.2010.04249.x
Additional Information:

SFB 595 B1

Identification Number: doi:10.1111/j.1551-2916.2010.04249.x
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