| 申请日期 | 2024-11-19 | 申请号 | JP2004315200 |
| 公开（公告）号 | JP2005045288A | 公开（公告）日 | 2005-02-17 |
| 公开国别 | JP | 申请人省市代码 | 全国 |
| 申请人 | TDK CORP | ||
| 简介 | PROBLEM TO BE SOLVED : To provide a surface multipolar anisotropic ring-shaped magnet which has high circularity and is inexpensive. SOLUTION : The surface multipolar anisotropic ring magnet consists of an R-T-B system sintered body (R is at least one kind of rare earth elements comprising Y, T is Fe, or Fe and Co) and satisfies formula I : (D2-D 1 )/2 8. | ||
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