Fabricating Fe₃O₄ and Fe₃O₄&Fe Flower-like microspheres for Electromagnetic Wave Absorbing in C and X Bands

Na Chen; Dan Li; Xin‑Yi Wang; Zhen‑Jie Guan; Jian‑Tang Jiang; Kang‑Jun Wang

doi:https://doi.org/10.1007/s13391-022-00347-7

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자료유형: 학술저널

저자정보: Na Chen (Shenyang University of Chemical Technology) Dan Li (Shenyang University of Chemical Technology) Xin‑Yi Wang (Shenyang University of Chemical Technology) Zhen‑Jie Guan (Harbin Institute of Technology) Jian‑Tang Jiang (Harbin Institute of Technology) Kang‑Jun Wang (Shenyang University of Chemical Technology)

저널정보: 대한금속·재료학회 Electronic Materials Letters Electronic Materials Letters Vol.18 No.4

발행연도: 2022.7

수록면: 370 - 380 (11page)

DOI: https://doi.org/10.1007/s13391-022-00347-7

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Magnetic composites have received increasing attention for electromagnetic wave absorption (EMA) applications. However,the practical EMA performance of the materials is severely hampered by mismatching impedance characteristics and finiteelectromagnetic attenuation capacity. Controlling the components and building the architecture fabrication is necessary tosolve these issues. Herein, a series of Fe3O4,Fe3O4&Fe and Fe microspheres with flower-like hierarchical structures wereconstructed through a solvothermal method followed by an annealed process. This hierarchical structure and the synergyeffect of dielectric dissipation and magnetic loss capacity offer Fe3O4a perfect impedance matching, providing an excellentEMA performance of an effective absorption bandwidth (EAB) of 4.0 GHz and a reflection loss (RL) of 67.9 dB. Meanwhile,the coordination of the hierarchical structures and the multiple components endow Fe3O4&Fe composites with an EAB aswide as 5.7 GHz (9.0?14.7 GHz) and a RL as strong as 78.7 dB at 1.88 mm, which covers 75% X and 45% Ku bands. Sucha remarkable lightweight and broad properties is due to the decent X band impedance matching and appropriate attenuationcapacity. Therefore, this work highlights the significant of regulating the hierarchical structure and components to enhancethe EMA performances.

#Fe3O4 · Fe3O4& #Fe · Hierarchical structure · Impedance matching · EMA performances

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