| 摘要 |
PURPOSE:To eliminate the deposits on a magnetic head and to improve running durability by providing a protective film essentially consisting of graphitic carbon contg. <=10wt% at least one kind selected from Co, Fe and Ni on a thin film. CONSTITUTION:The protective film essentially consisting of the graphitic carbon contg. one kind selected from Co, Fe and Ni is provided on the thin film. The weight of the Co, Fe and Ni to be incorporated into the protective film is preferably 0.5-5%. The thin film which is formed of a ferromagnetic metal such as Fe, Co or Ni or ferromagnetic alloy such as Fe-Co or is formed by adding a slight amt. of metal elements, etc., thereto is used for the thin magnetic metallic film. The formation of a magnetic recording medium is executed by first forming the thin magnetic metallic film by vacuum deposition on a nonmagnetic substrate and further, forming the protective film essentially consisting of the graphitic carbon contg. at least one kind among Co, Fe and Ni by vacuum deposition, sputtering, etc., thereon. The thickness of the magnetic film is specified to about 0.1-2mum and the thickness of the protective film to about 50-200Angstrom .
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