Invention Grant
- Patent Title: Magnetic recording medium and magnetic read/write apparatus
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Application No.: US16862809Application Date: 2020-04-30
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Publication No.: US12087341B2Publication Date: 2024-09-10
- Inventor: Chen Xu , Lei Zhang , Takayuki Fukushima , Hisato Shibata , Takehiro Yamaguchi , Kazuya Niwa , Tomoo Shige , Hiroaki Nemoto , Yuji Umemoto , Hiroshi Koyanagi
- Applicant: SHOWA DENKO K.K.
- Applicant Address: JP Tokyo
- Assignee: RESONAC CORPORATION
- Current Assignee: RESONAC CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: IPUSA, PLLC
- Priority: JP 19089202 2019.05.09
- Main IPC: G11B5/66
- IPC: G11B5/66 ; G11B5/65 ; G11B5/73
Abstract:
A magnetic recording medium includes a substrate, an underlayer formed on the substrate, and a magnetic layer formed on the underlayer. The magnetic layer includes an alloy having a L10 structure. The underlayer includes a first underlayer and a second underlayer. The first underlayer includes Mo and Ru, the content of Ru in the first underlayer is in a range of 5 atom % to 30 atom %, and the second underlayer includes a material having a body-centered cubic (BCC) structure. The second underlayer is formed between the first underlayer and the substrate.
Information query
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