Electronic magnetic relaxation in manganese ferrites

V.A.M. Brabers, A.A. Scheerder

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Two electronic magnetic relaxation phenomena are reported for the manganese ferrite system, which are both explained by electron hopping processes between octahedral iron ions: the first one by hopping between Fe2+ and Fe3+ ions with a Mn2+-ion as nearest neighbor and the second one by hopping between iron ions with only iron nearest neighbors. Electrical conductivity measurements performed on a single crystal, showed further that the composition dependence of activation energy for the conductivity behaves in a similar way as the magnetic activation energy which is a strong evidence for the proposed Fe2+-Fe3+ electron exchange mechanism.
Original languageEnglish
Pages (from-to)1907-1909
JournalIEEE Transactions on Magnetics
Issue number2, Pt. 2
Publication statusPublished - 1988


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