Abstract In the present work, novel Ni0.5Zn0.5Nd0.04Fe1.96O4 ferrite (NZNF)/polyaniline (PANI) nanocomposites were prepared by interfacial polymerization. The crystal structure, microstructure and electromagnetic parameters of the samples were investigated in detail, indicating that PANI grew uniformly on the surface of ferrite like coral. By testing the electromagnetic parameters, it was found that PANI significantly improved the real and imaginary parts of the dielectric constant of the samples, thus affecting the impedance matching and attenuation performance. The addition of PANI adversely affected the impedance matching, but had a good effect on attenuation capacity. When the amount of aniline was 25 wt% of the ferrite, the impedance matching and attenuation capacity of the as-prepared NZNF/PANI nanocomposite reached the optimal balance. The NZNF/PANI-25 nanocomposite exhibited a maximum reflection loss of −37.4 dB at 8.4 GHz, and the effective absorption bandwidth was 4.9 GHz at a thickness of 4.0 mm. This novel absorbing material is a promising absorbent with strong and wide band absorption characteristics.

中文翻译：

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Nd掺杂NiZn铁氧体/聚苯胺纳米复合材料的增强微波吸收性能

摘要 在目前的工作中，通过界面聚合制备了新型 Ni0.5Zn0.5Nd0.04Fe1.96O4 铁氧体 (NZNF)/聚苯胺 (PANI) 纳米复合材料。对样品的晶体结构、微观结构和电磁参数进行了详细研究，表明PANI在铁素体像珊瑚一样均匀生长。通过对电磁参数的测试发现，PANI显着提高了样品介电常数的实部和虚部，从而影响了阻抗匹配和衰减性能。PANI的加入对阻抗匹配有不利影响，但对衰减能力有很好的影响。当苯胺的量为铁氧体的 25 wt% 时，所制备的 NZNF/PANI 纳米复合材料的阻抗匹配和衰减能力达到最佳平衡。NZNF/PANI-25 纳米复合材料在 8.4 GHz 处的最大反射损耗为 -37.4 dB，有效吸收带宽为 4.9 GHz，厚度为 4.0 mm。这种新型吸波材料是一种很有前途的吸波材料，具有强和宽带的吸收特性。