Abstract
We present the synthesis and study of the magnetic properties of ∼6 nm Co nanoparticles embedded in an antiferromagnetic matrix of Cr 2O 3. The magnetic measurements have shown the presence of exchange interactions at the ferromagnetic/antiferromagnetic interface. This interaction is manifested by the shift of the coercive field measured after field cooling the sample through the Cr 2O 3 Néel temperature ( T N=308 K). Moreover, this interaction enhances the anisotropy of the Co nanoparticles making them magnetically stable till room temperature.
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