Electromagnetic and Microwave Absorption of Nanocrystalline Alloy Fe_0.2(Co_0.2Ni_0.8)_0.8 and Nanocomposite SrFe₁₂O₁₉/Ni_0.5Zn_0.5Fe₂O₄ Microfibers

Abstract:

Magnetic nanocrystalline alloy Fe_0.2(Co_0.2Ni_0.8)_0.8 microfibers and nanocomposite SrFe₁₂O₁₉/Ni_0.5Zn_0.5Fe₂O₄ microfibers are used as the absorbents in the double-layer structure for microwave absorption. The double-layer absorbers with a total thickness of 2 mm consisting of Fe_0.2(Co_0.2Ni_0.8)_0.8 and nanocomposite SrFe₁₂O₁₉/Ni_0.5Zn_0.5Fe₂O₄ microfibers are designed, and their microwave absorption properties are predicted based on the electromagnetic parameter measurements. The results show that the double-layer absorber with the absorption layer of SrFe₁₂O₁₉/Ni_0.5Zn_0.5Fe₂O₄ microfibers and the thickness of 0.6 mm has the best microwave absorption properties, with the bandwidth ( the reflection loss less than −10 dB) of 7.3 GHz ranging from 10.7 GHz to 18 GHz, and the maximum reflection loss of −71.4 dB at 12.1 GHz.

• Periodical: Advanced Materials Research (Volume 1035)
• Pages: 355-360
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1035.355
• Online since: October 2014
• Authors: Min Li, Zhou Wang, Hong Bo Liu, Xiang Qian Shen*
• Keywords: Electromagnetic Parameter, Microfiber, Microwave Absorption, Nanocomposite

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