Abstract
Based on 57Fe Mössbauer spectroscopy studies conducted at 300 K, the magnetic behaviour of the spinel ferrite system MgAl x Cr x Fe 2-2 x O 4 ( x=0.0–0.5) has been investigated. The Mössbauer spectra for x=0.0–0.2 exhibit two Zeeman sextets, one due to the Fe 3+ octahedral ions and the other due to the Fe 3+ tetrahedral ions, while the compositions x=0.3, 0.4 and 0.5 showed central paramagnetic doublet superimposed on the magnetic sextets. The variation of hyperfine parameters and origin of the central doublet on the magnetic sextets have been discussed.
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