Abstract We report the fabrication of bulk anisotropic (SmCo + FeCo)/NdFeB multicomponent nanocomposite magnets using high-pressure thermal compression (HPTC). The correlations among microstructure, magnetic properties, heating temperature and composition of the HPTC nanocomposite magnets were studied. The HPTC magnet made under variable temperatures (VT), with 19 wt% of FeCo phase, exhibits a maximum energy product of 32 MGOe, which is much higher than that (14 MGOe) for the HPTC magnet made under a constant temperature (CT). When the FeCo content increases to ∼23 wt%, the HPTC magnet made under VT still remains a high energy product of about 25 MGOe. With increasing NdFeB content, the (SmCo + FeCo)/NdFeB multicomponent nanocomposite magnets exhibit an enhanced magnetic anisotropy and coercivity. This work is beneficial to fabricating high-performance and low-cost permanent magnets for practical applications.

中文翻译：

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HPTC制备的(SmCo+FeCo)/NdFeB多组分纳米复合磁体随加热温度和成分变化的微观结构和磁性能

摘要 我们报告了使用高压热压缩 (HPTC) 制造块状各向异性 (SmCo + FeCo)/NdFeB 多组分纳米复合磁体。研究了HPTC纳米复合磁体的微观结构、磁性能、加热温度和成分之间的相关性。在可变温度 (VT) 下制造的 HPTC 磁体具有 19 wt% 的 FeCo 相，其最大能积为 32 MGOe，远高于恒温 (CT) 下制造的 HPTC 磁体的能量积 (14 MGOe) . 当 FeCo 含量增加到约 23 wt% 时，在 VT 下制造的 HPTC 磁体仍保持约 25 MGOe 的高能积。随着 NdFeB 含量的增加，(SmCo + FeCo)/NdFeB 多组分纳米复合磁体表现出增强的磁各向异性和矫顽力。