| 摘要 |
PURPOSE:To obtain a magnetic recording medium consisting of a Co alloy having an excellent high density recording characteristics and excellent resistance to wear with a head by forming a protective lubricating layer consisting of a thin alloy film composed essentially of Co contg. In on a magnetic recording layer. CONSTITUTION:A thin magnetic film of a Co alloy has the problem in that the hardness is high and that the m.p. is high, but the thin film of the Co alloy added with a metal of low melting point, i.e., In, is considerably improved in wear resistance and the magnetic characteristic thereof is not so much deteriorated as compared with the case in which In is not incorporated in said alloy. The protective lubricating layer is formed by a known PVD method such as vacuum deposition method, sputtering method, etc. like with the magnetic recording layer and the distribution of the concn. of In in the film thickness direction is easily controlled if said film is formed by an opposed target type sputtering method. The content of In in the protective lubricating layer is preferably 0.5-20at% (atomic per cent). |
