Patent ID: 6143096
Filing Date: 2000-11-07
Classification: G06K,G11B,H01F

Abstract:
A powdery alloy mainly composed of Mn--Bi having a particle diameter of 5 .mu.m or less which has a magnetic anisotropy, a coercive force of 6000 Oe or more and 35 emu/g or more in saturation magnetization, characterized in that said powdery alloy has been bound with a binder into a sheet of 0.5 to 10 .mu.m thickness in a state magnetically oriented toward said direction of magnetic anisotropy, and when said sheet is measured toward said magnetic anisotropy direction at 16 kOe and 5 kOe, the ratio of residual magnetic flux densities of Mr16k and Mr5k (Mr5k/Mr16k) is 0.85 or more.