Invention Grant
- Patent Title: Perpendicular magnetic recording medium and magnetic storage apparatus
- Patent Title (中): 垂直磁记录介质和磁存储设备
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Application No.: US11388991Application Date: 2006-03-24
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Publication No.: US07807278B2Publication Date: 2010-10-05
- Inventor: Toshio Sugimoto , Ryosaku Inamura , Takuya Uzumaki
- Applicant: Toshio Sugimoto , Ryosaku Inamura , Takuya Uzumaki
- Applicant Address: JP Tokyo
- Assignee: Showa Denko K.K.
- Current Assignee: Showa Denko K.K.
- Current Assignee Address: JP Tokyo
- Agency: Greer, Burns & Crain, Ltd.
- Main IPC: G11B5/66
- IPC: G11B5/66

Abstract:
A perpendicular magnetic recording medium, including a soft-magnetic backing layer; and a recording layer provided over the oft-magnetic backing layer. There is provided a magnetic flux slit layer between the soft-magnetic backing layer and the recording layer. The magnetic flux slit layer includes a soft-magnetic layer having a generally columnar structure generally isolated magnetically in an in-plane direction. The magnetic flux slit layer contains at least one selected from the group consisting of Co, Fe, Ni, a Co alloy, a Fe alloy, and a Ni alloy, as a major component, and the magnetic flux slit layer further contains any one selected from the group consisting of Ta, Cu, Pb, Cr, and Re.
Public/Granted literature
- US20060199043A1 Perpendicular magnetic recording medium and magnetic storage apparatus Public/Granted day:2006-09-07
Information query
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