Birch, Stewart, Kolasch & Birch, LLP
Process for producing alloy, alloy and alloy containing sheets made therefrom
 A powdery alloy mainly composed of Mn--Bi having particle diameter of 5 .mu.m or less which has a magnetic anisotropy of 6000 Oe or more in coercive force and 35 emu/g or more in saturation magnetization, wherein the size of crystallite according to Scheler's formula is 700 .ANG. or less; and an alloy containing sheet of 0.5 to 10 .mu.m thickness in which a powdery alloy mainly composed of Mn--Bi having particle diameter of 5 .mu.m or less which has a magnetic anisotropy of 6000 Oe or more in coercive force and 35 emu/g or more in saturation magnetization is 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, wherein when said sheet is measured toward said magnetic anisotropy direction at 16 kOe and 5 kOe, the ratio of residual magnetic flux density Mr16k and Mr5k (Mr5k/Mr16k) is 0.85 or more. 
Hitachi Maxell, Ltd.
G G H
G06K G11B H01F
inventional inventional inventional
Hisao Shinichi
Kanzaki Kitahata