Invention Application
- Patent Title: Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same
- Patent Title (中): 垂直磁记录介质,制造工艺及其使用的磁存储装置
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Application No.: US10076655Application Date: 2002-02-19
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Publication No.: US20020197514A1Publication Date: 2002-12-26
- Inventor: Kiwamu Tanahashi , Atsushi Kikugawa , Noboru Shimizu , Yukio Honda , Yuzuru Hosoe
- Applicant: Hitachi, Ltd.
- Applicant Address: null
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: null
- Priority: JP2001-143637 20010514
- Main IPC: G11B005/667
- IPC: G11B005/667

Abstract:
Provided are a double-layer perpendicular magnetic recording medium having a high medium S/N at an areal recording density of 50 Gbits or more per square inch, and a magnetic storage apparatus having excellent reliability with a low error rate. The perpendicular magnetic recording medium is formed by sequentially laminating a domain control layer, an amorphous soft magnetic underlayer, an intermediate layer, and a perpendicular recording layer on a substrate. The domain control layer is a triple-layer film formed by laminating a first polycrystalline soft magnetic layer, a disordered antiferromagnetic layer, and a second polycrystalline soft magnetic layer from a substrate side.
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