| 摘要 |
[Problem] To improve magnetic properties of a rare earth permanent magnet containing neodymium, iron, and boron. [Solution] The present invention is a rare earth permanent magnet having a compound expressed in formula (1) as the main phase. In formula (1), M is an element selected from among any of cobalt, beryllium, lithium, aluminum, and silicon, and x satisfies 0.01 ≤ x ≤ 0.25. The main phase has an Nd-Fe-B layer and an Fe layer formed periodically, and a portion of the boron is substituted by one or more elements selected from a group comprising cobalt, beryllium, lithium, aluminum, and silicon. Additionally, the main phase includes terbium and praseodymium added to the above-mentioned contained components. The rare earth permanent magnet is further provided with an inter-granular phase containing one or more elements selected from a group comprising aluminum, copper, niobium, zirconium, titanium, and gallium. |
