| 摘要 |
<p>An R-T-B based sintered magnet according to the present invention has a composition comprising: 12 at% to 17 at% of a rare-earth element R; 5.0 at% to 8.0 at% of boron B; 0.1 at% to 1.0 at% of Al; 0.02 at% to less than 0.5 at% of Mn; and a transition metal T as the balance. The rare-earth element R is at least one element selected from the rare-earth elements, including Y (yttrium), and includes at least one of Nd and Pr. The transition element T includes Fe as its main element.</p> |
