Abstract: First, an R—Fe—B based rare-earth sintered magnet body including, as a main phase, crystal grains of an R2Fe14B type compound that includes a light rare-earth element RL, which is at least one of Nd and Pr, as a major rare-earth element R is provided. Next, an M layer, including a metallic element M that is at least one element selected from the group consisting of Al, Ga, In, Sn, Pb, Bi, Zn and Ag, is deposited on the surface of the sintered magnet body and then an RH layer, including a heavy rare-earth element RH that is at least one element selected from the group consisting of Dy, Ho and Tb, is deposited on the M layer. Thereafter, the sintered magnet body is heated, thereby diffusing the metallic element M and the heavy rare-earth element RH from the surface of the magnet body deeper inside the magnet.

Abstract: A method for manufacturing a soft magnetic steel sheet is disclosed. The silicon steel sheet is made to undergo a finish treatment so that it can be put to the practical use. The finish treatment method for an Fe-Si silicon steel sheet manufactured by a direct casting method by directly contacting a molten pool to a cooling roll according to the present invention includes the step of pickling the manufactured Fe-Si silicon steel sheet, and carrying out a cold rolling. Then the silicon steel sheet thus cold-rolled is heat-treated at a temperature above 0.5 Tm (Tm: melting temperature of the steel sheet).