METHOD OF MANUFACTURING DISK SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, DISK SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a disk substrate for a magnetic recording medium to obtain a magnetic disk having adequate surface roughness, having high in-plane magnetic anisotropy and a high S/N ratio.

SOLUTION: In the method of manufacturing the disk substrate for the magnetic recording medium having a texturing step, the texturing step supplys a slurry containing an abrasive containing cluster diamond to the surface of the substrate while the disk substrate for the magnetic recording medium is rotated in the circumferential direction and while a surface in contact with the substrate of a polishing tape including fibers made of polyester having 400 to 950 nm fiber diameter is pressed to the rotated magnetic substrate by a pressurizing means. The manufacturing method of the magnetic recording medium is characterized in that at least a magnetic layer is formed on the disk substrate for the magnetic recording medium manufactured by the manufacturing method of the disk substrate for the magnetic recording medium. The magnetic recording medium is manufactured by the method of manufacturing the magnetic recording medium.

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