| 摘要 |
PURPOSE:To increase the surface roughness of the protective layer of a landing zone by providing a ruggedness forming layer between a base and magnetic layer of said zone and forming said layer so as to have the surface roughness larger than the surface roughness of the main surface of the base. CONSTITUTION:An underlying layer 13, a magnetic layer 14 and a surface layer 15 are laminated on the base 11 consisting of glass or ceramics and the ruggedness forming layer 12 is formed between the base 11 and layer 13 of the landing zone 10b. The layer 12 is formed to have the surface roughness larger than the surface roughness of the main surface of the base 11 and therefore, the layer 15 of the zone 10b has the desired surface roughness. Then, the suction of a magnetic head in the zone 10b is prevented and the starting is smoothed. In addition, the surface roughness of a read-wirte zone 10a remains small and therefore, high-density recording is maintained.
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