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)
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 ; Jakes, Peter ; Erdem, Emre ; Smyth, Donald M. ; Ozarowski, Andrew ; Van Tol, Johan ; Jones, Jacob L. ; Eichel, Rüdiger-A. |
| Type of entry: | Bibliographie |
| Title: | Processing of Manganese-Doped [Bi0.5Na0.5]TiO3 Ferroelectrics: Reduction and Oxidation Reactions During Calcination and Sintering |
| Language: | English |
| Date: | May 2011 |
| Journal or Publication Title: | Journal of the American Ceramic Society |
| Volume of the journal: | 94 |
| Issue Number: | 5 |
| URL / URN: | http://dx.doi.org/10.1111/j.1551-2916.2010.04249.x |
| 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. |
| Identification Number: | doi:10.1111/j.1551-2916.2010.04249.x |
| Additional Information: | SFB 595 B1 |
| 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 |
| Last Modified: | 05 Mar 2013 09:51 |
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