发明授权
US06677061B2 Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus 有权
磁记录介质,其制造方法以及磁记录和重放装置

  • 专利标题: Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus
  • 专利标题(中): 磁记录介质,其制造方法以及磁记录和重放装置
  • 申请号: US10152675
    申请日: 2002-05-23
  • 公开(公告)号: US06677061B2
    公开(公告)日: 2004-01-13
  • 发明人: Kenji ShimizuAkira SakawakiHiroshi Sakai
  • 申请人: Kenji ShimizuAkira SakawakiHiroshi Sakai
  • 优先权: JPP2001-154448 20010523
  • 主分类号: G11B566
  • IPC分类号: G11B566
Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus
摘要:
A magnetic recording medium exhibiting excellent recording and reproduction characteristics is disclosed. A magnetic recording medium includes a non-magnetic substrate 1; a soft magnetic undercoat film 2; an orientation-regulating film 3; a perpendicular magnetic film 4; and a protective film 5, the films being formed on the substrate 1. The soft magnetic undercoat film 2 contains a material represented by the following composition: aFe-bCo-cM-dX1-fN where M is one or more elements selected from Ti, Zr, Nb, Hf, Ta, V, and Mo; X1 is one or more elements selected from Cr, Ga, Al, Si, and Ni; and a, b, c, d, and f represent atomic percentages and satisfy the following relations: 60≦a+b≦90, 30≦a≦90, 5≦c≦20, 0.1≦d≦7, and 3≦f≦30.
信息查询
0/0