Invention Grant
- Patent Title: Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic storage apparatus using the same
- Patent Title (中): 垂直磁记录介质，其制造工艺及其使用的磁存储装置
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Application No.: US10697002Application Date: 2003-10-31
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Publication No.: US07153596B2Publication Date: 2006-12-26
- Inventor: Kiwamu Tanahashi , Reiko Arai , Atsushi Kikugawa
- Applicant: Kiwamu Tanahashi , Reiko Arai , Atsushi Kikugawa
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly, Stanger, Malur & Brundidge, P.C.
- Priority: JP2003-141296 20030520
- Main IPC: G11B5/66
- IPC: G11B5/66 ; G11B5/70
Abstract:
A soft magnetic underlayer includes a first amorphous soft magnetic layer to which an exchange bias magnetic field is applied directly from an antiferromagnetic layer or via a ferromagnetic layer, and a second amorphous soft magnetic layer which is formed on the first amorphous soft magnetic layer via a non-magnetic layer. The first amorphous soft magnetic layer and the second amorphous soft magnetic layer are antiferromagnetically coupled.
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Information query
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