• Hierarchical Fe₃O₄-Fe@CNFs/Al-Fe₃O₄-Fe nanocomposites were constructed by in situ growth, vacuum-assisted filtration, and self-reduction methods.

• The carbon framework, with in situ grown magnetic nanoparticles, supports two-dimensional magnetic nanosheets, achieving excellent electromagnetic performance and good impedance matching.

• Excellent reflection loss value (− 59.3 dB), broadband wave absorption (5.6 GHz at 2.2 mm thickness), and low radar cross-section value were achieved.

中文翻译：

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通过原位生长实现高效电磁波吸收的多级磁性/碳纳米复合材料的结构工程

• 通过原位生长、真空辅助过滤和自还原方法构建了多级Fe ₃ O ₄ -Fe@CNFs/Al-Fe ₃ O _{4 -Fe纳米复合材料。}

• 碳框架具有原位生长的磁性纳米粒子，支撑二维磁性纳米片，实现优异的电磁性能和良好的阻抗匹配。

• 实现了出色的反射损耗值（− 59.3 dB）、宽带波吸收（2.2 mm 厚度时为 5.6 GHz）和低雷达截面值。