METHOD FOR PRODUCING SINTERED RARE-EARTH MAGNET, SINTERED RARE-EARTH MAGNET, AND MATERIAL FOR SAME

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A method for producing a sintered rare-earth magnet characterized by sintering a raw material that includes a ribbon-shaped polycrystalline phase with an average grain size of 10 to 200 nm fabricated by rapid solidification of an alloy melt having a rare-earth magnet composition, and a low-melting point phase formed on the surface of the polycrystalline phase and having a melting point lower than the polycrystalline phase.