Hierarchical microstructures and synergistic dielectric-magnetic effect are expected to satisfy the improvement of microwave absorption, but still face considerable challenges. Herein, we employ the electrospinning strategy and thermal reduction engineering to fabricate hierarchical carbon fibers with multi-dimensional magnetic configurations, in which Ni spheres are embedded in carbon fibers and Co sheets are anchored on the surface of carbon fibers. The results indicate that abundant hetero-interfaces combined with electromagnetic synergy promote impedance characteristics and strengthen interfacial polarization, magnetic domains with multi-dimensional configurations contribute to magnetic loss by means of intrinsic ferromagnetic resonance and magnetic coupling, and unique hierarchical architectures result in multiple scatterings. As a result, the minimum reflection loss (R_L,min) achieves a high value of −45.9 dB at 4 mm and the effective absorption bandwidth (EAB) reaches 5.9 GHz at a thickness of 2.8 mm. It is believed that this design concept opens up a novel strategy in fabricating multi-dimensional magnetic configurations and the absorbers with high-efficient absorption performance exhibit promising the potential in managing electromagnetic radiation.

分层微结构和协同介电磁效应有望满足微波吸收的改善，但仍面临相当大的挑战。在此，我们采用静电纺丝策略和热还原工程来制造具有多维磁性结构的分级碳纤维，其中镍球嵌入碳纤维中，钴片锚定在碳纤维表面。结果表明，丰富的异质界面与电磁协同作用可促进阻抗特性并增强界面极化，具有多维配置的磁畴通过本征铁磁共振和磁耦合导致磁损耗，独特的分层结构导致多次散射。因此，R _L,min ) 在 4 mm 处达到 -45.9 dB 的高值，有效吸收带宽 (EAB) 在 2.8 mm 厚度处达到 5.9 GHz。相信这种设计理念开辟了一种制造多维磁性结构的新策略，并且具有高效吸收性能的吸收体在管理电磁辐射方面表现出广阔的潜力。