PREPARATION AND CHARACTERIZATION OF CaFeO3AND ITS SOLID SOLUTION WITH SrFeO3
- 1 March 1979
- journal article
- Published by EDP Sciences in Le Journal de Physique Colloques
- Vol. 40 (C2) , C2-331
- https://doi.org/10.1051/jphyscol:19792117
Abstract
A Mössbauer effect study on the Ca1-xSrxFeO3 (0 ≤ x ≤ 0.75) system shows a charge disproportionation 2Fe4+ → "Fe3+" + "Fe5+" below the antiferromagnetic transition temperatures. At room temperature, each oxide shows a slightly broad symmetric absorption, but the spectrum at 4 K consists of two kinds of magnetic patterns with nearly equal intensities but with different CS's and Hi's. Both the differences, or the difference between the electronic states of the two kinds of Fe ions, decrease with increasing Sr-contentKeywords
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