SINTERED MAGNET AND METHOD FOR MANUFACTURING SINTERED MAGNET

摘要

In order to ensure the strength of a thinned sintered magnet, disclosed is a sintered magnet (1) which is a ferrite sintered magnet formed by sintering a magnetic material. The sintered magnet (1) is manufactured by producing a compact by injection molding a magnetic powder mixture obtained by mixing magnetic powder and a binder resin in a mold to which a magnetic field is applied, and sintering the compact. The thickness in the position of the center of gravity of the sintered magnet (1) is 3.5 mm or less. The surface roughness (Rz) of the sintered magnet (1) is 0.1-2.5 µm inclusive. The surface roughness (Rz) is a ten-point average roughness.