Abstract
CoFe2O4 (CFO)/Y3Fe5O12 (YIG) hard/soft nanocomposite powders were successfully synthesized by physically mixing the ferrite components with different mass ratios and subsequently heating at an appropriate temperature. With increasing the mass ratio of CFO ferrite, the saturation magnetization of the nanocomposite ferrite powders initially increase, reaching maximum value of 63.02 emu/g at a mass ratio of 9:1 (CFO:YIG), and then show a reduction tendency with further increasing the mass ratio. The saturation magnetization can also be evidently enhanced compared with the pure-phase ferrites. The above enhancements of magnetic properties are attributed to the exchange-coupling between the hard and soft phases.
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