Abstract
Exchange-coupled SmCo5/Nd2Fe14B nanocomposite magnets have been fabricated by ball milling of the micrometer sized SmCo5 and Nd2Fe14B powders. The influence of Nd2Fe14B content on the microstructure and magnetic properties of these hybrid alloys was investigated. The alloys that show strong intergrain exchange-coupling behavior with (BH)max=2.95MGOe was obtained when the two hard phases are well coupled. A first-order-reversal-curve (FORC) analysis was performed for both SmCo5 single-phase magnet and SmCo5/Nd2Fe14B hybrid magnet; the FORC diagrams results show two major peaks for the hybrid magnets. In both cases, the magnetization reversal behaviors for these alloys were discussed in detail and are consistent with the results of δM plots.
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