| 发明名称 | Ferrite magnetic material | ||
| 摘要 | An object of the present invention is to provide a ferrite magnetic material which can provide a permanent magnet retaining high Br and HcJ as well as having high Hk/HcJ. The ferrite magnetic material according to a preferred embodiment is a ferrite magnetic material formed of hard ferrite, wherein a P content in terms of P2O5 is 0.001% by mass or more. | ||
| 申请公布号 | US8834738(B2) | 申请公布日期 | 2014.09.16 |
| 申请号 | US201013382220 | 申请日期 | 2010.07.02 |
| 申请人 | TDK Corporation | 发明人 | Nagaoka Junichi;Mori Takahiro;Morita Hiroyuki;Minachi Yoshihiko |
| 分类号 | H01F1/11;C01G49/00;C04B35/26;C01G51/00;C04B35/632;C04B35/626 | 主分类号 | H01F1/11 |
| 代理机构 | Drinker Biddle & Reath LLP | 代理人 | Drinker Biddle & Reath LLP |
| 主权项 | 1. A ferrite sintered magnet composed of a sintered body of a ferrite magnetic material, wherein the ferrite magnetic material comprises hard ferrite and a phosphorus (P) content, characterized in that the P content in terms of P2O5 is 0.005 to 0.1% by mass, wherein the hard ferrite comprises LaSrCo-substituted Ca magnetoplumbite-type ferrite. | ||
| 地址 | Tokyo JP | ||