- 专利标题: Magnetic recording medium utilizing adjacent underlayer and magnetic layer having particular compositions, magnetic storage apparatus, and method of manufacturing magnetic recording medium
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申请号: US17141367申请日: 2021-01-05
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公开(公告)号: US11189313B2公开(公告)日: 2021-11-30
- 发明人: Koichi Nagasaka , Takayuki Fukushima , Lei Zhang , Chen Xu , Hisato Shibata , Takehiro Yamaguchi , Hiroshi Koyanagi , Yuji Umemoto
- 申请人: SHOWA DENKO K.K.
- 申请人地址: JP Tokyo
- 专利权人: SHOWA DENKO K.K.
- 当前专利权人: SHOWA DENKO K.K.
- 当前专利权人地址: JP Tokyo
- 代理机构: IPUSA, PLLC
- 优先权: JPJP2020-022463 20200213
- 主分类号: G11B5/70
- IPC分类号: G11B5/70 ; G11B5/706 ; G11B5/73 ; G11B5/33 ; G11B5/851 ; G11B5/716 ; G11B5/66
摘要:
A magnetic recording medium includes a substrate, an underlayer provided above the substrate, and a magnetic layer provided on and in contact with the underlayer. The underlayer includes a compound represented by a general formula MgO(1-x), where x falls within a range of 0.07 to 0.25. The magnetic layer includes an alloy having a L10 structure, and the alloy having the L10 structure includes one or more elements selected from a group consisting of Al, Si, Ga, and Ge.
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