Drahus, Michael D. ; Jakes, Peter ; Erdem, Emre ; Eichel, Rüdiger-A. (2011):
Defect structure of the mixed ionic–electronic conducting Sr[Ti,Fe]Ox solid-solution system — Change in iron oxidation states and defect complexation.
In: Solid State Ionics, 184 (1), pp. 47-51. ISSN 01672738,
[Article]
Abstract
The oxidation/reduction behavior of iron in the Sr[Ti1 − yFey]Ox solid-solution system, for y set membership, variant [0.002; 0.05], under various oxygen partial pressures was examined through the use of electron paramagnetic resonance (EPR) spectroscopy. The results indicate that iron has been induced to move between di- tri- and tetravalent oxidation states. This results with the centers functioning as either a source (oxidation) or as a sink (reduction) for electrons. In particular it is shown that the reducibility of iron decreases with increasing iron content.
| Item Type: | Article |
|---|---|
| Erschienen: | 2011 |
| Creators: | Drahus, Michael D. ; Jakes, Peter ; Erdem, Emre ; Eichel, Rüdiger-A. |
| Title: | Defect structure of the mixed ionic–electronic conducting Sr[Ti,Fe]Ox solid-solution system — Change in iron oxidation states and defect complexation |
| Language: | English |
| Abstract: | The oxidation/reduction behavior of iron in the Sr[Ti1 − yFey]Ox solid-solution system, for y set membership, variant [0.002; 0.05], under various oxygen partial pressures was examined through the use of electron paramagnetic resonance (EPR) spectroscopy. The results indicate that iron has been induced to move between di- tri- and tetravalent oxidation states. This results with the centers functioning as either a source (oxidation) or as a sink (reduction) for electrons. In particular it is shown that the reducibility of iron decreases with increasing iron content. |
| Journal or Publication Title: | Solid State Ionics |
| Journal volume: | 184 |
| Number: | 1 |
| Uncontrolled Keywords: | Strontium titanate ferrite; Multi-valent iron; Oxygen vacancy; Charge compensation; Solubility limit |
| 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: | 05 Aug 2011 12:49 |
| Official URL: | http://dx.doi.org/10.1016/j.ssi.2010.09.045 |
| Additional Information: | SFB 595 B1 |
| Identification Number: | doi:10.1016/j.ssi.2010.09.045 |
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