| 申请日期 | 2025-07-14 | 申请号 | KR1020220015479 |
| 公开（公告）号 | KR1020220024274A | 公开（公告）日 | 2022-03-03 |
| 公开国别 | KR | 申请人省市代码 | 全国 |
| 申请人 | HITACHI METALS LTD | ||
| 简介 | A sintered ferrite magnet has a composition of metal elements Ca, R, A, Fe, and Co represented by the general formula Ca1-x-yRxAyFe2n-zCoz, wherein R is at least one of rare earth elements and inevitably includes La; A is Sr and/or Ba; x, y, z and n represent the atomic ratio of Ca, R, A, Fe and Co; 2n represents a molar ratio represented by 2n = (Fe + Co)/(Ca + R + A); and x, y, z, and n satisfy the following conditions : 0.15 y, 0 < z < = 0.18, and 7.5 < = (2n-z) < 11.0. | ||
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