Perpendicular magnetic recording media

摘要

[Problem] An object is to provide a perpendicular magnetic recording medium in which a narrower track width is achieved by enhancing an exchange coupling magnetic field Hex of a soft magnetic layer so that a higher recording density can be achieved.;[Solution] A perpendicular magnetic recording medium according to the present invention is configured to include a magnetic recording layer 122 that records a signal, and a soft magnetic layer 114 provided below the magnetic recording layer, on a base 110 on a main surface of which textures are formed, wherein the textures includes first textures 110a that is linear rails in a certain direction, and second textures 110b that are trails intersecting at a predetermined angle with the first textures; and the angle of intersection between the first textures and the second textures is 10° or less.

主权项

1. A perpendicular magnetic recording medium comprising a magnetic recording layer that records a signal, and a soft magnetic layer provided below the magnetic recording layer, on a base on a main surface of which textures are formed, wherein
the textures comprise first textures that are linear trails intersecting with a circumferential direction of the base at a first angle, and second textures that are linear trails intersecting at a predetermined angle with the first textures, the second textures intersecting with the circumferential direction of the base at a second angle that is different from the first angle; the base has a surface roughness Ra of 0.085 nm to 0.09 nm; and the angle of intersection between the first textures and the second textures is from 3° to 8°.