| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of Co elusion and tribology durability by using the CVD method for depositing a carbon film and controlling a B/A value of a carbon protection film. SOLUTION: In the case of manufacturing a magnetic recording medium by sequentially laminating at least a nonmagnetic under layer, a granular magnetic layer, a protection layer, and a lubrication layer on a nonmagnetic polymer substrate, an amorphous carbon protection film the B/A value of which is controlled within 2 to 9 is deposited as the protection layer by using the CVD method employing a mixture of hydrocarbon group gas and hydrogen gas within a ratio of 9:1 to 1:9. Thus, the compatibility between suppression of Co elusion and improvement of durability is attained for a high Hc granular magnetic medium. COPYRIGHT: (C)2004,JPO
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