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Abstract

A method for producing an anisotropic rare earth magnet according to the present invention comprises a forming step of obtaining a formed body by press-forming a mixed raw material of a magnet raw material capable of generating R₂TM₁₄B₁-type crystals of a tetragonal compound of a rare earth element (R), boron (B), and a transition element (TM), and a diffusion raw material to serve as a supply source of at least a rare earth element (R′) and Cu; and a diffusing step of diffusing at least R′ and Cu onto surfaces or into crystal grain boundaries of the R₂TM₁₄B₁-type crystals by heating the formed body. In this production method, the diffusion raw material having a low melting point and high wettability envelops the R₂TM₁₄B₁-type crystals, and therefore an anisotropic rare earth magnet having high coercivity can be obtained without decreasing magnetization which should be inherently exhibited by the magnet raw material.

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First Claim