| 简介 |
A high-performance permanent magnet is provided. A permanent magnet has a composition expressed by a composition formula : RpFeqMrCutCo100-p-q-r-t. The permanent magnet also has a metallic structure including a main phase and a grain boundary phase arranged between crystal grains of the main phase. The crystal grains satisfy a formula : 0.001≰|(100/p1max)−(100/p1min)|≰1.2, where p1 is a concentration of the R element in each of the crystal grains (atomic percent), p1max is a maximum value of the p1 in all the crystal grains, and p1min is a minimum value of the p1 in all the crystal grains. |
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