PERMANENT MAGNET, MOTOR AND GENERATOR

摘要

A high-performance permanent magnet is provided. This permanent magnet comprises a composition represented by compositional formula: RpFeqMrCutCo100-p-q-r-t (in the formula, R is at least one element selected from the rare earth elements, M is at least one element selected from the group consisting of Zr, Ti and Hf, p is a number satisfying 10.8 ≦ p ≦ 12.5 at.%, q is a number satisfying 25 ≦ q ≦ 40 at.%, r is a number satisfying 0.88 ≦ r ≦ 4.5 at.%, and t is a number satisfying 3.5 ≦ t ≦ 13.5 at.%), and a metal material including a main phase having a Th2Zn17-type crystal phase and Cu-M-rich phases having a higher Cu concentration and M concentration than the main phase.