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公开(公告)号:US06878459B2
公开(公告)日:2005-04-12
申请号:US10026709
申请日:2001-12-27
CPC分类号: G11B5/7325 , G11B5/656 , Y10T428/12639 , Y10T428/12833 , Y10T428/12847 , Y10T428/12861 , Y10T428/12986 , Y10T428/24967 , Y10T428/24975 , Y10T428/265 , Y10T428/31
摘要: A magnetic recording medium was a high normalized coercive force and superior thermal stability. The magnetic recording medium comprises a non-magnetic base material, and a ferromagnetic metal layer of cobalt based alloy formed on top of this base material with a metal underlayer disposed therebetween, and displays a coercive force Hc of at least 2000 (Oe) and an anisotropic magnetic field Hkgrain of at least 10,000 (Oe). Furthermore, magnetic recording media in which the aforementioned metal underlayer and/or the ferromagnetic metal layer are fabricated in a film fabrication chamber with an ultimate vacuum at the 10−9 Torr level are preferred. A magnetic recording medium according to the present invention can be ideally applied to hard disks, floppy disks, and magnetic tapes and the like.
摘要翻译: 磁记录介质是高归一化矫顽力和优异的热稳定性。 磁记录介质包括非磁性基材,以及形成在该基材顶部上的钴基合金的强磁性金属层,其间设置有金属底层,并显示出至少2000(Oe)的矫顽力Hc和 至少10,000(Oe)的各向异性磁场Hk <颗粒>。 此外,优选在具有10 -9乇级别的极限真空的膜制造室中制造上述金属底层和/或强磁性金属层的磁记录介质。 根据本发明的磁记录介质可以理想地应用于硬盘,软盘和磁带等。