Patent ID: 8211246
Filing Date: 2012-07-03
Classification: C21D,C22C,H01F,H02K

Abstract:
1. A permanent magnet comprising a composition represented by a composition formula: where, R is at least one element selected from Nd and Pr, M is at least one element selected from Ti, Zr, and Hf, p is a number (atomic ratio) satisfying 0.22≦p≦0.45, q is a number (atomic ratio) satisfying 0.005≦q≦0.05, r is a number (atomic ratio) satisfying 0.01≦r≦0.1, x is a number (atomic ratio) satisfying 0.05≦x≦0.5, z is a number (atomic ratio) satisfying 7≦z≦9, wherein the permanent magnet comprises a Th wherein a ratio of I