| 摘要 |
The purpose of the present invention is to provide a material for a rare earth permanent magnet having a high magnetic coercive force and a high residual magnetic flux density. The permanent magnet of the present invention comprises 28 to 35% by weight of at least one rare earth element selected from the group consisting of neodymium Nd, praseodymium Pr, dysprosium Dy, terbium Tb and holmium Ho, 0.9 to 1.3% by weight of boron B, 0.25 to 3% by weight of phosphorus P, iron Fe and inevitable impurities. It can further comprise 0.1 to 3.6% by weight of cobalt Co and 0.02 to 0.25% by weight of copper Cu.
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