Broadband microwave absorption of Fe3O4eBaTiO3 composites enhanced by interfacial polarization and impedance matching
Broadband microwave absorption of Fe3O4eBaTiO3 composites enhanced by interfacial polarization and impedance matching
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界面极化和阻抗匹配增强 Fe3O4eBaTiO3 复合材料的宽带微波吸收
DOI：
10.1016/j.compositesb.2019.01.008
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发表时间：
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期刊：
影响因子：
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通讯作者：
Jiping Liu
中科院分区：
文献类型：
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作者：
Yue Huang;Jindou Ji;Yan Chen;Xiang Li;Jun He;Xingwang Cheng;Shuli He;Ying Liu;Jiping Liu
纳米复合磁性材料与介电材料具有良好的阻抗匹配性，适合作为高性能的电磁波吸收材料。在这项工作中，微波absorbing.properties的Fe 3 O 4 eBaTiO 3复合材料进行了研究，在1-18 GHz的频率范围内的Fe 3 O 4 eBaTiO 3。复合材料呈现出显着增强的微波吸收性能相比，钛酸钡。对于最佳的Fe 3 O 4（x）eBaTiO 3（1-x）（x=0.8）复合材料，在12.26 GHz处的反射损耗（RL）可达-47.4 dB，在2.2 mm的匹配厚度下，-10 dB以下的带宽为5.0 GHz，是BaTiO 3的6倍。吸收带宽的展宽是由于更好的阻抗匹配。结果表明，Fe_3O_4-eBaTiO_3复合材料具有较强的吸波能力和较宽的吸波带宽，是一种优良的微波吸收材料
Nanocomposites composed of magnetic and dielectric materials are suitable for high performance electromagnetic.wave absorbers due to their great impedance matching. In this work, the microwave absorbing.properties of Fe3O4eBaTiO3 composites were investigated over a frequency range of 1–18 GHz Fe3O4eBaTiO3.composites present significantly enhanced microwave absorption performance compared with BaTiO3. For the.optimal Fe3O4(x)eBaTiO3(1-x) (x=0.8) composite, the reflection loss (RL) could reach −47.4 dB at 12.26 GHz.with a matching thickness of 2.2 mm, the bandwidth below −10 dB is 5.0 GHz, which is six times higher than.BaTiO3. The broadened absorption bandwidth is resulted from better impedance matching. This results show.that Fe3O4eBaTiO3 composites can be used as an excellent microwave absorption materials with strong absorption.and broad bandwidth