Abstract We present the preparation of a novel microwave absorber based on a combination of two ternary composites of SrFe10Al2O19/MWCNTs/polypyrrole and Ni0.5Zn0.5Fe2O4/MWCNTs/polypyrrole. The hard and soft ferrites are prepared using the combustion method, while the polymer is deposited by in-situ polymerization method on the ferritic core. X-ray diffractometer (XRD), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM) and vector network analysis (VNA) are used to perform microstructural, magnetic and electromagnetic characterization of the nanocomposite. The composite sown in polyester resin exhibits a minimum reflection loss of −34.5 dB at a matching thickness of 3 mm and with a bandwidth of 3.05 GHz. The results also indicate that the total EMI shielding SET in the current composite is mainly due to the contribution of the absorption component (SEA) rather than the reflection one (SER).

中文翻译：

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基于 SrFe10Al2O19 和 Ni0.5Zn0.5Fe2O4/MWCNTs/聚吡咯的新型多组分微波吸收器设计的见解

摘要 我们提出了一种基于 SrFe10Al2O19/MWCNTs/聚吡咯和 Ni0.5Zn0.5Fe2O4/MWCNTs/聚吡咯的两种三元复合材料组合的新型微波吸收剂的制备。硬铁氧体和软铁氧体采用燃烧法制备，聚合物采用原位聚合法沉积在铁氧体磁芯上。X 射线衍射仪 (XRD)、扫描电子显微镜 (SEM)、振动样品磁强计 (VSM) 和矢量网络分析 (VNA) 用于对纳米复合材料进行微观结构、磁性和电磁表征。在聚酯树脂中播种的复合材料在 3 mm 的匹配厚度和 3.05 GHz 的带宽下表现出 -34.5 dB 的最小反射损耗。