| 简介 |
A sintered rare-earth magnet according to the present invention includes an Nd 2 Fe 14 B type crystalline phase as its main phase and Al as an additive. The magnet includes at least one light rare-earth element LR selected from the group consisting of yttrium and the rare-earth elements other than Dy, Ho and Tb, and at least one heavy rare-earth element HR selected from the group consisting of Dy, Ho and Tb. The mole fractions ± 1, ± 2 and ² of the light and heavy rare-earth elements LR and HR and Al satisfy the inequalities 25‰¦ ± 1+ ± 2 ‰¦40 mass%, 00.20 mass%, and 0.04 ‰¦ ² / ± 2‰¦ 0.12. |
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