Sm-Fe-N-BASED MAGNET

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PROBLEM TO BE SOLVED : To provide a Sm-Fe-N-based magnet exhibiting high coercive force. SOLUTION : A magnet represented by RaFe(100-a-b-c)TbXc, (R is one kind or more of rare earth element essentially containing Sm, T is one kind or more of transition metal element essentially containing Mo or Ta excepting Fe, X is one kind or more of N, C, B essentially containing N, where 6≤a≤14, 5≤b≤20, 8≤c≤18). The main phase particle contained in the magnet has a Th2Zn17 type structure, and a grain boundary phase where T is concentrated more than the main phase particle is contained in the grain boundary of the magnet. SELECTED DRAWING : None COPYRIGHT : (C)2017, JPO&INPIT