Patent ID: 7998283

Claim:
An anisotropic rare earth hard magnetic material, which has, on atomic percent basis, a composition of (Sm 1-α R α ) x Fe 100-x-y-z M y I z wherein: R is Pr alone or a combination of Pr with at least one rare earth element selected from the group consisting of La, Ce, Nd, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y; M is at least one element selected from the group consisting of Si, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Nb, Mo, Al, and Zr; I is N alone or a combination of N and C; 0.01≦α≦0.30; 7≦x≦12; 0.01≦y≦8.0; and 6≦z≦14.4; and the anisotropic rare earth hard magnetic material comprises monocrystal particles having a Th 2 Zn 17 -structure, of which crystalline grains are in a flake shape with a grain size ranging from 1 to 3 μm, and an easy magnetization direction of the crystalline grains being oriented along a minor axis of the flake crystalline grains.