Invention Grant
- Patent Title: Perpendicular magnetic recording medium and magnetic storage apparatus using the same
- Patent Title (中): 垂直磁记录介质及使用其的磁存储装置
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Application No.: US12903135Application Date: 2010-10-12
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Publication No.: US08703307B2Publication Date: 2014-04-22
- Inventor: Akemi Hirotsune , Yotsuo Yahisa , Ichiro Tamai
- Applicant: Akemi Hirotsune , Yotsuo Yahisa , Ichiro Tamai
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agency: Zilka-Kotab, PC
- Main IPC: G11B5/66
- IPC: G11B5/66

Abstract:
According to one embodiment, a perpendicular magnetic recording medium includes a soft magnetic underlayer formed above a substrate, a lower seed layer formed above the soft magnetic underlayer, at least one upper seed layer formed above the lower seed layer, an interlayer formed above the at least one upper seed layer, a perpendicular recording layer formed above the interlayer, and a protective layer formed above the perpendicular recording layer, wherein the at least one upper seed layer comprises Ni or a Ni based alloy including N, and wherein the lower seed layer includes Ni and at least one element selected from a group consisting of: W and Cr. Other embodiments are described herein regarding perpendicular magnetic recording systems and methods of producing perpendicular magnetic media.
Public/Granted literature
- US20120087034A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS USING THE SAME Public/Granted day:2012-04-12
Information query
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