- 专利标题: Magnetic recording medium
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申请号: US17760555申请日: 2020-09-04
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公开(公告)号: US12087340B2公开(公告)日: 2024-09-10
- 发明人: Natsuki Ichise , Minoru Yamaga , Katsunori Maeshima , Masaru Terakawa , Takeshi Takahashi , Tomoe Sato , Takashi Kataguchi
- 申请人: Sony Group Corporation
- 申请人地址: JP Tokyo
- 专利权人: Sony Group Corporation
- 当前专利权人: Sony Group Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: K&L Gates LLP
- 优先权: JP 19176117 2019.09.26
- 国际申请: PCT/JP2020/033522 2020.09.04
- 国际公布: WO2021/059922A 2021.04.01
- 进入国家日期: 2022-03-15
- 主分类号: G11B5/706
- IPC分类号: G11B5/706 ; G11B5/73
摘要:
A magnetic recording medium is a tape-shaped magnetic recording medium that has a recording layer including an ε-iron oxide particle. An area ratio Rlow (=(Slow/Stotal)×100) of a total area Stotal of an SFD curve of the recording layer in a perpendicular direction and an area Slow of the SFD curve in which a coercivity Hc is in a range from −500 [Oe]≤Hc≤500 [Oe] is equal to or less than 5.5%.
公开/授权文献
- US20220392488A1 MAGNETIC RECORDING MEDIUM 公开/授权日:2022-12-08
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