A MODEL FOR EXPLAINING THE MÖSSBAUER SPECTRA OF FERRIMAGNETIC SPINELS WITH A HIGH DEGREE OF DIAMAGNETIC SUBSTITUTION
- 1 March 1979
- journal article
- Published by EDP Sciences in Le Journal de Physique Colloques
- Vol. 40 (C2) , C2-669
- https://doi.org/10.1051/jphyscol:19792232
Abstract
The magnetic behaviour, as observed with 57Fe Mössbauer spectroscopy, of Fe2(1-y)Mg1+y TiyO4 spinels with y ≥ 0.4 is dominated by giant moment magnetic clusters. Using the theory of superparamagnetism, the size of the clusters could be calculated and was found to decrease with increasing concentration of non-magnetic ions. It is further shown that cluster formation is enhanced if only the average numbers of AB pairs is decreasedKeywords
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