发明申请
- 专利标题: PERPENDICULAR MAGNETIC RECORDING MEDIUM
- 专利标题(中): 全能磁记录介质
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申请号: US12749147申请日: 2010-03-29
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公开(公告)号: US20100247963A1公开(公告)日: 2010-09-30
- 发明人: Kong KIM , Hi SHIN , Tomoko SEKI , Satoshi ISHII
- 申请人: Kong KIM , Hi SHIN , Tomoko SEKI , Satoshi ISHII
- 申请人地址: JP Tokyo SG Singapore
- 专利权人: HOYA CORPORATION,HOYA MAGNETICS SINGAPORE PTE. LTD.
- 当前专利权人: HOYA CORPORATION,HOYA MAGNETICS SINGAPORE PTE. LTD.
- 当前专利权人地址: JP Tokyo SG Singapore
- 优先权: JP2009-081885 20090330; JP2010-067388 20100324
- 主分类号: G11B5/33
- IPC分类号: G11B5/33
摘要:
A perpendicular magnetic recording medium is used for information recording of a perpendicular magnetic recording type. The perpendicular magnetic recording medium includes a substrate, a soft magnetic layer, an underlayer, and a magnetic layer having a multilayered structure including a plurality of magnetic layers. The soft magnetic layer, the underlayer, and the magnetic layer are formed on the substrate. At least one of the magnetic layers includes CoPt magnetic grains containing oxide. The oxide includes at least one material selected from the group consisting of SiO2, TiO2, Cr2O3, Ta2O5, WO3, CoO, and Co3O4.
公开/授权文献
- US08431257B2 Perpendicular magnetic recording medium 公开/授权日:2013-04-30
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