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)
doi: 10.1016/j.ssi.2010.09.045
Artikel, Bibliographie
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Drahus, Michael D. ; Jakes, Peter ; Erdem, Emre ; Eichel, Rüdiger-A. |
| Art des Eintrags: | Bibliographie |
| Titel: | Defect structure of the mixed ionic–electronic conducting Sr[Ti,Fe]Ox solid-solution system — Change in iron oxidation states and defect complexation |
| Sprache: | Englisch |
| Publikationsjahr: | März 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Solid State Ionics |
| Jahrgang/Volume einer Zeitschrift: | 184 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1016/j.ssi.2010.09.045 |
| Kurzbeschreibung (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. |
| Freie Schlagworte: | Strontium titanate ferrite; Multi-valent iron; Oxygen vacancy; Charge compensation; Solubility limit |
| 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: | 05 Aug 2011 12:49 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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