Invention Grant
- Patent Title: Perpendicular magnetic recording media
- Patent Title (中): 垂直磁记录介质
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Application No.: US13149540Application Date: 2011-05-31
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Publication No.: US08999535B2Publication Date: 2015-04-07
- Inventor: Toshiaki Tachibana
- Applicant: Toshiaki Tachibana
- Applicant Address: SG Singapore
- Assignee: WD Media (Singapore) PTE, Ltd
- Current Assignee: WD Media (Singapore) PTE, Ltd
- Current Assignee Address: SG Singapore
- Priority: JP2010-122587 20100528
- Main IPC: G11B5/73
- IPC: G11B5/73 ; G11B5/82 ; G11B5/84

Abstract:
[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.
Public/Granted literature
- US20120140359A1 Perpendicular Magnetic Recording Media Public/Granted day:2012-06-07
Information query
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