发明名称 Magnetic recording medium, method of manufacture therefor, and magnetic read/write apparatus
摘要 A magnetic recording medium that is capable of recording and reading back information at a higher density by improving the read/write characteristics and thermal stability, a method of manufacture therefor, and a magnetic read/write apparatus are provided. This magnetic recording medium, comprises an orientation control film that controls the orientation of a film provided directly thereabove, a perpendicular magnetic film, of which the axis of easy magnetization is generally oriented perpendicular to a non-magnetic substrate, and a protective film, that are provided on the non-magnetic substrate, wherein the perpendicular magnetic film is made of a material which contains Co, Cr, Pt and Cu, the Cr content being 16 at % to 24 at % and the Cu content being 0.1 at % to 4 at %, and a coercive force (Hc) of the perpendicular magnetic film being at least 3000 (Oe), negative nucleation field (-Hn) being 0 (Oe) to 2500 (Oe), and a ratio of residual magnetization (Mr) to saturation magnetization (Ms) being at least 0.85.
申请公布号 US2003104250(A1) 申请公布日期 2003.06.05
申请号 US20020218570 申请日期 2002.08.15
申请人 SHOWA DENKO K.K. AND TOSHIBA CORPORATION 发明人 SHIMIZU KENJI;SAKAWAKI AKIRA;YANG HUI;MOCHIZUKI HIRO;SAKAI HIROSHI;HIKOSAKA TAKASHI;NAKAMURA FUTOSHI
分类号 G11B5/64;G11B5/73;(IPC1-7):G11B5/66 主分类号 G11B5/64
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