公开(公告)号：US5034286A

公开(公告)日：1991-07-23

申请号：US260844

申请日：1988-10-20

申请人： Shogo Nasu ,  Koji Saiki

发明人： Shogo Nasu ,  Koji Saiki

IPC分类号： G11B5/64 ,  H01F10/20

CPC分类号： H01F10/20 ,  G11B5/64 ,  Y10S428/90 ,  Y10T428/12465

摘要： A perpendicular magnetic storage medium comprising a substrate and a perpendicular magnetic anisotropic film formed on the substrate, characterized in that the perpendicular magnetic anisotropic film is a film of a sub-oxide of a metal having a composition described by a general formula [(Fe.sub.1-x Co.sub.x).sub.1-y M.sub.y ].sub.1-z O.sub.z [where 0.01.ltoreq.x.ltoreq.0.75, 0.ltoreq.y.ltoreq.0.30, 0.05.ltoreq.z.ltoreq.0.50 and M means at least one metal excluding Fe and Co.); and has an easy magnetization axis being perpendicular to a plane thereof, and both a peak of diffracted X-ray intensity caused by oxidized Fe and a peak of diffracted X-ray intensity caused by metal state Fe and Co and Metal M observed in X-ray diffraction spectrum.The perpendicular magnetic storage medium of the present invention can be produced easily and economically at a low substrate temperature, and has high wear resistance, high recording/reproducing sensitivity and high recording density.