Magnet materials, permanent magnets, rotary electric machines, and vehicles

摘要

PROBLEM TO BE SOLVED: To increase the coercive force of a magnet material. SOLUTION: The magnet material has a composition formula 1: RxNbyBtM100-x-y-t (R is at least one element selected from the group consisting of rare earth elements, and M is at least selected from the group consisting of Fe and Co. It is one element, x is a number satisfying 6.2 x ≦ 8 atomic%, y is a number satisfying 0.75 ≦ x / (x + y) ≦ 0.95, and t is 0 ≦. It is represented by t a number satisfying 12 atomic%), has a main phase having at least one crystal phase selected from the group consisting of a TnMn12 type crystal phase and a TbCu7 type crystal phase, and z = (100-x). Z defined by −y−t) / (x + y) is a number satisfying 7.5 ≦ z ≦ 12. [Selection diagram] Fig. 1