Abstract In this paper, we introduced attapulgite (ATP) into the system of ferrite composites for the first time. By sol-gel self-propagating combustion method, attapulgite/barium ferrite (ATP/BaFe12O19) was prepared, and then ternary composites of attapulgite/barium ferrite/polyaniline (ATP/BaFe12O19/PANI) were obtained by in-situ oxidative polymerization of aniline on ATP/BaFe12O19 mixture. The phase composition, morphology and electromagnetic properties of the as-prepared composites were characterized by X-ray diffraction (XRD), Transmission election microscope (TEM), Fourier transform infrared (FTIR), vibrating sample magnetometer (VSM) and vector network analyzer (VNA). We found that the ATP/BaFe12O19/PANI composites at a thickness of 2 mm have the minimum reflection loss of −11.89 dB at 11.28 GHz, besides the effective absorption bandwidth (less than −5 dB) reached 6.39 GHz (from 8.42 GHz to 14.81 GHz).

中文翻译：

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ATP/BaFe 12 O 19 /PANI三元复合材料的合成、表征及微波特性

摘要 本文首次将凹凸棒石（ATP）引入铁氧体复合材料体系中。采用溶胶-凝胶自蔓延燃烧法制备凹凸棒石/铁酸钡(ATP/BaFe12O19)，再通过苯胺原位氧化聚合得到凹凸棒石/铁酸钡/聚苯胺三元复合材料(ATP/BaFe12O19/PANI)在 ATP/BaFe12O19 混合物上。通过X射线衍射（XRD）、透射电子显微镜（TEM）、傅里叶变换红外（FTIR）、振动样品磁强计（VSM）和矢量网络分析仪（越通社）。我们发现厚度为 2 mm 的 ATP/BaFe12O19/PANI 复合材料在 11.28 GHz 下的最小反射损耗为 -11.89 dB，