| 摘要 |
A thin-film hard disk magnetic medium comprising a magnetic recording film made from a magnetic metal alloy formed on a circumferentially textured surface of a substrate, in order that the surface of the magnetic recording layer is provided with a surface roughness, Rmax of 100 ANGSTROM to 400 ANGSTROM , and adjacent grooves form a space of 0.5 mu m to 3 mu m measured in the radial direction of the substrate.
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