| 简介 |
To provide an R—Fe—B-based rare earth magnet where R is mainly Ce, ensuring that even when a rare earth element R1 except for Ce is very small in amount or is not present, the coercive force can be enhanced.
A rare earth magnet wherein the rare earth magnet has a total composition represented by the formula : CepR1qT(100-p-q-r-s)BrM1s (wherein R1 is a rare earth element except for Ce, T is one or more members selected from Fe, Ni and Co, M1 is one or more members selected from Ti, Ga, Zn, Si, Al, Nb, Zr, Mn, V, W, Ta, Ge, Cu, Cr, Hf, Mo, P, C, Mg, Hg, Ag, and Au, and an unavoidable impurity, and p, q, r, and s are 11.80≤p≤12.90, 0≤q≤3.00, 5.00≤r≤20.00, and 0≤s≤3.00), and wherein the rear earth magnet comprises a magnetic phase and a (Ce, R1)-rich phase present around the magnetic phase. |
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