Abstract Fe7Co3 with the highest magnetic moment is considered as the best soft magnetic phase. In addition, the domain wall energy of a PrFeB nanocomposite has been calculated to be higher than that of a NdFeB nanocomposite. Against this background, we investigated the influence of Pr content on the microstructures and magnetic properties of nanocomposite PrFeB/Fe7Co3 ribbons prepared by melt-spinning. A Pr content of 10 at% was found to engender hot-annealed ribbons with optimal magnetic properties; this material exhibited a remanence (Jr) of 0.59 T, a coercivity (Hci) of 548.3 kA/m, and a maximum magnetic energy product (BH)max of 69.3 kJ/m3. Furthermore, the volume fraction of the Fe7Co3 phase was calculated using an exchange coupling model.

中文翻译：

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PrFeB/Fe7Co3纳米复合磁体的显微结构和磁性能

摘要 磁矩最高的Fe7Co3被认为是最好的软磁相。此外，经计算，PrFeB 纳米复合材料的畴壁能量高于 NdFeB 纳米复合材料的畴壁能量。在此背景下，我们研究了 Pr 含量对熔纺制备的纳米复合材料 PrFeB/Fe7Co3 薄带的微观结构和磁性能的影响。发现 10 at% 的 Pr 含量可产生具有最佳磁性能的热退火带；该材料的剩磁 (Jr) 为 0.59 T，矫顽力 (Hci) 为 548.3 kA/m，最大磁能积 (BH)max 为 69.3 kJ/m3。此外，使用交换耦合模型计算了 Fe7Co3 相的体积分数。