RARE-EARTH MAGNET AND METHOD FOR MANUFACTURING SAME

摘要

Provided is a rare-earth magnet having excellent magnetic anisotropy and a reduced amount of Nd, etc., and a method for manufacturing said magnet. A rare-earth magnet provided with a crystal grain having the overall composition R2(1-×)R1× yFe100-y-w-z-vCowBzTMv (where R2 is at least one of Nd, Pr, Dy, and Tb; R1 is an alloy of at least one of Ce, La, Gd, Y, and Sc; TM is at least one of Ga, Al, Cu, Au, Ag, Zn, In, and Mn; 0 < × < 1, y=12 to 20, z=5.6 to 6.5, w=0 to 8, and v=0 to 2), the average grain size of the crystal grain being no greater than 1000 nm, the crystal grain being composed of a core and an outer shell around said core, the core having a composition richer in R1 than in R2, and the outer shell having a composition richer in R2 than in R1.