Abstract Calculations based on density functional theory conclude that the plausible upper limits of saturation magnetic polarization, magnetic transition temperature, and the magnetocrystalline anisotropy constant of permanent magnet materials could be ∼2.7 T, ∼2000 K, and ∼1000 MJ m −3 , respectively. It is suggested that a possible strategy to reach these values for high-performance permanent magnets is to design Fe-based magnets containing a small amount of light rare earth elements, together with some additional elements including V, Cr, Co, Ni, and possibly typical elements as interstitials. The idea of creating high-performance permanent magnets without rare earth elements can be dispensed with.

中文翻译：

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永磁材料的最大性能

摘要 基于密度泛函理论的计算得出结论，永磁材料的饱和磁极化、磁转变温度和磁晶各向异性常数的合理上限分别为~2.7 T、~2000 K和~1000 MJ m -3 。 . 建议实现高性能永磁体这些值的一种可能策略是设计包含少量轻稀土元素的铁基磁体，以及一些额外的元素，包括 V、Cr、Co、Ni 和可能的典型元素作为间隙。可以放弃创建不含稀土元素的高性能永磁体的想法。