Abstract
Co2Z-type hexaferrites were synthesized with sol–gel method, and then were composited with pure iron powders to form a new type of iron-based soft magnetic composites (SMCs). The morphology, components and magnetic properties of all samples were characterized by XRD, SEM, EDS, B-H Analyzer and DC Current Source. All results indicate that Co2Z-type hexaferrites are well dispersed in the SMCs and play the role of insulation. Fe/Co2Z SMCs with the high Ms and low Hc present the higher effective permeability, lower core loss at high frequencies and more stable D-C bias characteristics than the pristine Fe SMCs. All results indicate that Co2Z hexaferrites with the high resistance could effectively improve the high-frequency performance of Fe/Co2Z SMCs.
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