Abstract
We report a study of the exchange bias of a high quality perovskite cobaltiteLa0.82Sr0.18CoO3 single crystal with spin glass (SG) like nature. According to thedependence of exchange bias field on the cooling field, an antiferromagnetic(AFM) interfacial exchange coupling constant at the spin-glass regionJi≈−0.68 meV was found. Thesize of the FM regions tFM≈9 nm was estimated in the spin-glass system from the inverse proportion of exchange bias fieldHEB to the size of the FM regions.
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