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Temperature Dependence of Strong Exchange Coupling in Ferrite Heterostructures
Published online by Cambridge University Press: 15 February 2011
Abstract
Single crystalline spinel structure ferrite thin film bilayers exhibit nearly ideal exchange coupling at room temperature. In these bilayers, the blocking temperature is only limited by the Curie temperature of the (Mn,Zn)Fe2O4. Up to the Curie temperature of the soft (Mn,Zn)Fe2O4 layer, the magnetization loops indicate that exchange anisotropy dominates the magnetization of the soft layer up to magnetic fields on the order of the coercive field of the hard CoFe2O4layer.
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