CHARGE DISPROPORTIONATION IN Fe4+-OXIDES WITH PEROVSKITE-TYPE STRUCTURES
- 1 March 1979
- journal article
- Published by EDP Sciences in Le Journal de Physique Colloques
- Vol. 40 (C2) , C2-313
- https://doi.org/10.1051/jphyscol:19792110
Abstract
For a further examination and elaboration of our simple charge disproportionation model for Fe4+-oxides, 2Fe4+ → Fe3+ + Fe5+, two series of solid solutions Ca1-xSrxFeO3 and Sr1-xLaxFeO3 with the perovskite structure have been studied. The Mössbauer spectrum of Sr0.5La0.5FeO3 at 4 K clearly indicates the disproportionation. For both series of oxides, the disproportionation seems to set in at the TN'sKeywords
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