Invention Grant
- Patent Title: Heat-assisted magnetic recording medium and magnetic storage apparatus
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Application No.: US16433377Application Date: 2019-06-06
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Publication No.: US11037591B2Publication Date: 2021-06-15
- Inventor: Lei Zhang , Chen Xu , Takayuki Fukushima , Kazuya Niwa , Tetsuya Kanbe , Hisato Shibata , Takehiro Yamaguchi , Tomoo Shige
- 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: JPJP2018-120042 20180625
- Main IPC: G11B5/73
- IPC: G11B5/73 ; G11B5/65 ; G11B5/00

Abstract:
A heat-assisted magnetic recording medium includes: a substrate; an underlayer; and a magnetic layer including an alloy having an L10 structure, wherein the underlayer includes, from the substrate side, a bcc underlayer including a substance having a bcc structure, a first oxide layer that is in contact with the bcc underlayer, and a second oxide layer that is in contact with the magnetic layer. The bcc underlayer, the first oxide layer, and the second oxide layer are stacked in the recited order. The first oxide layer and the second oxide layer include magnesium oxide, and the second oxide layer further includes one or more compounds selected from the group consisting of vanadium oxide, vanadium nitride, and vanadium carbide.
Public/Granted literature
- US20190392860A1 HEAT-ASSISTED MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS Public/Granted day:2019-12-26
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