Invention Grant
- Patent Title: Perpendicular magnetic recording medium utilizing a first cobalt magnetic layer and a second Pd-SiOx layer and method of manufacturing same
- Patent Title (中): 利用第一钴磁性层和第二Pd-SiOx层的垂直磁记录介质及其制造方法
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Application No.: US11069920Application Date: 2005-03-01
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Publication No.: US07510788B2Publication Date: 2009-03-31
- Inventor: Yasuyuki Kawada
- Applicant: Yasuyuki Kawada
- Applicant Address: JP
- Assignee: Fuji Electric Device Technology Co., Ltd.
- Current Assignee: Fuji Electric Device Technology Co., Ltd.
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2004-058230 20040302
- Main IPC: G11B5/66
- IPC: G11B5/66 ; G11B5/673 ; C23C14/08

Abstract:
A perpendicular magnetic recording medium is disclosed that exhibits reduced media noise and enhanced thermal stability of recorded magnetization, and thus provides a medium of high recording density and excellent read-write performance. The perpendicular magnetic recording medium comprises a magnetic film on a nonmagnetic substrate. The magnetic film is a multilayered lamination film composed of alternately laminated first magnetic layers of cobalt and second magnetic layers of palladium, the second magnetic layers containing SiO2. By setting a ratio of Ku2 to Ku to a value not smaller than a specified value, the compatibility between the ease of writing-in to the perpendicular magnetic recording medium by a head and the thermal stability of recorded magnetization is more improved.
Public/Granted literature
- US20050202285A1 Perpendicular magnetic recording medium and method of manufacturing same Public/Granted day:2005-09-15
Information query
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