| 申请日期 | 2025-07-18 | 申请号 | DE10310572 |
| 公开（公告）号 | DE10310572B4 | 公开（公告）日 | 2008-04-10 |
| 公开国别 | DE | 申请人省市代码 | 全国 |
| 申请人 | HITACHI LTD | ||
| 简介 | A permanent magnet comprises a hard magnetic material that contains at least a rare earth element and an anti-ferromagnetic material, wherein the hard magnetic material and the anti-ferromagnetic material are magnetically coupled. A volume ratio of the anti-ferromagnetic material is 20% or less, based on the permanent magnet. | ||
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