Patent ID: 8568539
Filing Date: 2013-10-29
Classification: B22F,C22C,H01F

Abstract:
1. A permanent magnet comprising a sintered body having a composition represented by the following composition formula: wherein R is at least one element selected from the group consisting of rare-earth elements, M is at least one element selected from the group consisting of Ti, Zr and Hf, p is a number, which is an atomic ratio, satisfying 0.25≦p≦0.6, q is a number, which is an atomic ratio, satisfying 0.005≦q≦0.1, r is a number, which is an atomic ratio, satisfying 0.01≦r≦0.1, z is a number, which is an atomic ratio, satisfying 4≦z≦9, and w is a number, which is an atomic ratio, satisfying 0.005≦w≦0.6, wherein aggregates of oxides containing the element R are substantially uniformly dispersed in the sintered body.