| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rare earth permanent magnet that is superior in coercive force and residual magnetic flux density. <P>SOLUTION: This rare earth permanent magnet contains a rare earth element R of 20-40 wt.%, boron B of 0.5-4.5 wt.%, M (one or two kinds of Al, Cu, Sn, and Ga) of 0.03-0.5%, Bi of 0.01-0.2 wt.%, and a transition metal element T as the remaining part. Therefore, the rare earth permanent magnet has high magnetic characteristics. <P>COPYRIGHT: (C)2003,JPO |
