文章基本信息

标题：1D Magnetic Materials of Fe₃O₄ and Fe with High Performance of Microwave Absorption Fabricated by Electrospinning Method
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作者：Rui Han ; Wei Li ; Weiwei Pan 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2014
卷号：4
DOI：10.1038/srep07493
出版社：Springer Nature
摘要：Fe₃O₄ and Fe nanowires are successfully fabricated by electrospinning method and reduction process. Wiry microstructures were achieved with the phase transformation from α-Fe₂O₃ to Fe₃O₄ and Fe by partial and full reduction, while still preserving the wire morphology. The diameters of the Fe₃O₄ and Fe nanowires are approximately 50–60 nm and 30–40 nm, respectively. The investigation of microwave absorption reveals that the Fe₃O₄ nanowires exhibit excellent microwave absorbing properties. For paraffin-based composite containing 50% weight concentration of Fe₃O₄ nanowires, the minimum reflection loss reaches −17.2 dB at 6.2 GHz with the matching thickness of 5.5 mm. Furthermore, the calculation shows that the modulus of the ratio between the complex permittivity and permeability |ε/μ| is far away from unity at the minimum reflection loss point, which is quite different from the traditional opinions.