发明申请
- 专利标题: GRANULAR PERPENDICULAR MEDIA INTERLAYER FOR A STORAGE DEVICE
- 专利标题(中): 用于存储设备的格式全面的媒体间隔层
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申请号: US13367991申请日: 2012-02-07
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公开(公告)号: US20120141836A1公开(公告)日: 2012-06-07
- 发明人: Shoutao Wang , Weilu Xu , Chunghee Chang , Xiaoguang Ma , Mark Johnson , Abebe Hailu , Charles Chen
- 申请人: Shoutao Wang , Weilu Xu , Chunghee Chang , Xiaoguang Ma , Mark Johnson , Abebe Hailu , Charles Chen
- 申请人地址: US CA Cupertino
- 专利权人: Seagate Technology LLC
- 当前专利权人: Seagate Technology LLC
- 当前专利权人地址: US CA Cupertino
- 主分类号: G11B5/66
- IPC分类号: G11B5/66 ; C30B25/06
摘要:
An apparatus and method are provided for improving perpendicular magnetic recording media. The present invention provides media, and a method of fabricating media in a cost-effective manner, with a reduced ruthenium (Ru) content interlayer structure, while meeting media performance requirements. A perpendicular magnetic recording medium is provided comprising a non-magnetic substrate having a surface, and a layer stack situated on the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface a magnetically soft underlayer; an amorphous or crystalline, non-magnetic seed layer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material situated on the underlayer; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer situated on the interlayer structure. The interlayer structure is a stacked structure comprising, in overlying sequence: a chromium alloy situated on the seed layer; and an upper interlayer situated on the chromium alloy.
公开/授权文献
- US08696874B2 Seed layer comprising FCC structure 公开/授权日:2014-04-15