- 专利标题： Core-shell particle, fired product of core-shell particle, manufacturing method of core-shell particle, epsilon type iron oxide-based compound particle, manufacturing method of epsilon type iron oxide-based compound particle, magnetic recording medium, and manufacturing method of magnetic recording medium
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申请号： US16132662申请日： 2018-09-17
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公开(公告)号： US11348711B2公开(公告)日： 2022-05-31
- 发明人: Kenji Naoi , Masashi Shirata , Takashi Fujimoto
- 申请人： FUJIFILM Corporation
- 申请人地址： JP Tokyo
- 专利权人： FUJIFILM Corporation
- 当前专利权人： FUJIFILM Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Sughrue Mion, PLLC
- 优先权： JPJP2017-187171 20170927
- 主分类号： H01F1/11
- IPC分类号： H01F1/11 ; C01G49/06 ; C01G49/08 ; C01G49/00 ; C01G49/02 ; G11B5/712 ; G11B5/706
摘要：
The invention provides a core-shell particle which can provide, by being calcinated, epsilon type iron oxide-based compound particles that have a small coefficient of variation of primary particle diameter and show excellent SNR and running durability when employed in a magnetic recording medium as well as applications thereof. The core-shell particle includes: a core including at least one iron oxide selected from Fe2O3 or Fe3O4, or iron oxyhydroxide; and a shell that coats the core, the shell including a polycondensate of a metal alkoxide and a metal element other than iron, as well as applications thereof.
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