Patent ID: 7481895

Claim:
A flaky, isotropic SmFeN powdery magnet material prepared by roll-quenching a molten alloy and nitriding the alloy powder thus obtained to form a magnet alloy; the magnet alloy consisting of an alloy composition of the formula, by atomic %: Sm x Ce a Fe 100-x-v Co b N v wherein 7.1≦x≦12 and 0.5≦v≦20, a TbCu 7 crystal structure, and flakes with a thickness is 10-40 μm. wherein a=0.3 at. % of the alloy composition up to 30 at. % of Sm, and b=2.0 at. % of the alloy composition up to 35 at. % of Fe, and wherein the magnet alloy has an intrinsic coercive force (iHc) of 7 kOe higher.