Journal of Inorganic Materials, Volume. 39, Issue 1, 71(2024)

Low-frequency Microwave Absorption of CIPs@Mn0.8Zn0.2Fe2O4-CNTs Composites

Haiyan CHEN1, Zhipeng TANG1, Liangjun YIN1、*, Linbo ZHANG1、*, and Xin XU2
Author Affiliations
  • 11. Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education, National Engineering Research Center of Electromagnetic Radiation Control Materials, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
  • 22. Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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    Development of 5 G wireless communication and low-frequency radar detection has made low- frequency electromagnetic wave radiation a serious problem today. Although research on medium and high frequency band absorbing materials is now relatively mature, designing low frequency band absorbing materials remains a major challenge. Here, we designed a low-band composite absorbing material of 0.5-3 GHz based on the quarter-wavelength cancellation mechanism. A CIPs@Mn0.8Zn0.2Fe2O4-CNTs ternary composites were prepared by using a simple one-step hydrothermal method, which involved growing ferrite on the surface of carbonyl iron powder and carbon nanotubes. The influence of carbon nanotube content on the absorption peak frequency of the material was investigated. Experimental results show that carbon nanotubes enhances the material's attenuation coefficient by introducing additional interfacial polarization, dipole polarization and other loss mechanisms. Furthermore, coupling of high dielectric and high permeability enables the material to achieve better impedance matching in the low frequency band based on the quarter-wavelength cancellation mechanism. At a thickness of 4 mm, the reflection loss of the samples was obtained at 2.11 GHz and 1.75 GHz, with a -10 dB bandwidth of 1.70-2.70 GHz and 1.40-2.20 GHz, respectively. The composites exhibit excellent low-frequency absorption performance, endowing it highly suitable for applications helped by its simple preparation process and well low-frequency absorption. This research provides a new method for developing more effective low-frequency absorbing materials.


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    Haiyan CHEN, Zhipeng TANG, Liangjun YIN, Linbo ZHANG, Xin XU. Low-frequency Microwave Absorption of CIPs@Mn0.8Zn0.2Fe2O4-CNTs Composites [J]. Journal of Inorganic Materials, 2024, 39(1): 71

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    Paper Information


    Received: Jul. 24, 2023

    Accepted: --

    Published Online: Mar. 28, 2024

    The Author Email: YIN Liangjun (, ZHANG Linbo (