| 摘要 |
A magnetic disk comprising a nonmagnetic substrate, a metallic thin film magnetic layer provided on the substrate and a hard carbon protective layer provided on the magnetic layer, the hard carbon protective layer containing at least one metal element of silicon, germanium, tin and lead, or further containing fluorine, formed by bias plasma CVD treatment, has a high attrition resistance, a high peeling resistance and a high crack resistance or further a higher corrosion resistance.
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