The development of new radar-absorbing structures (RASs) with strong microwave absorption, fine thickness and adequate structural performance is imperative. Herein, nanocrystalline Ni_0.5Zn_0.5Fe₂O₄ was synthesised by a facile and effective sol–gel autocombustion technique. The structural and magnetic properties of ferrite were determined by various characterisation techniques, and E-glass/epoxy-based nanocomposites with different weight percentages of ferrite were fabricated by in-situ polymerisation. Further, electromagnetic properties were investigated to elucidate the possible absorption mechanism of the fabricated structures. The 4-mm-thick double-layered E-glass/epoxy/nickel–zinc ferrite composites exhibited reflection loss (RL) of <−10 dB for a bandwidth of 2.4 GHz and a maximum RL of −33 dB at 9.6 GHz. This performance was attributed to the larger magnetic loss and sufficient matching of electromagnetic parameters. This study provides a unique insight into the utilisation of Ni_0.5Zn_0.5Fe₂O₄ for producing lightweight and relatively thin RASs in the X-band at a low cost.

必须开发具有强微波吸收能力，厚度薄且结构性能适当的新型雷达吸收结构（RAS）。这里，纳米晶Ni _0.5 Zn _0.5 Fe ₂ O ₄通过一种简便有效的溶胶-凝胶自燃技术合成。通过各种表征技术确定了铁氧体的结构和磁性能，并通过原位聚合制备了具有不同重量百分比铁氧体的E-玻璃/环氧树脂基纳米复合材料。此外，研究了电磁性能以阐明制造结构的可能吸收机理。厚度为4毫米的双层E-玻璃/环氧树脂/镍锌铁氧体复合材料在2.4 GHz带宽下反射损耗（RL）<-10 dB，在9.6 GHz下最大RL为-33 dB。该性能归因于较大的磁损耗和电磁参数的充分匹配。这项研究为Ni _0.5 Zn的利用提供了独特见解_0.5 Fe ₂ O _4，用于以低成本生产X波段的轻质和较薄的RAS。