Invention Grant
- Patent Title: Magnetic recording medium and magnetic storage apparatus
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Application No.: US14220332Application Date: 2014-03-20
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Publication No.: US09934810B2Publication Date: 2018-04-03
- Inventor: Lei Zhang , Tetsuya Kanbe , Yuji Murakami , Kazuya Niwa
- Applicant: SHOWA DENKO K.K.
- Applicant Address: JP Tokyo
- Assignee: SHOWA DENKO K.K.
- Current Assignee: SHOWA DENKO K.K.
- Current Assignee Address: JP Tokyo
- Agency: IPUSA, PLLC
- Priority: JP2013-084285 20130412; JP2013-124791 20130613
- Main IPC: G11B5/66
- IPC: G11B5/66 ; G11B5/73

Abstract:
A magnetic recording medium includes a substrate, multiple underlayers formed on the substrate, and a magnetic layer formed on the multiple underlayers. A main component of the magnetic layer is an alloy having a L10 structure. At least one of the multiple underlayers is a crystalline underlayer containing W. The W is a main component of the crystalline underlayer. The crystalline underlayer further contains 1 mol % or more to 20 mol % or less of one or more kinds of elements selected from B, Si, and C. A barrier layer including a material having a NaCl structure is formed between the crystalline underlayer and the magnetic layer.
Public/Granted literature
- US20140308542A1 MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS Public/Granted day:2014-10-16
Information query
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