In-situ growth strategy to fabrication of MWCNTs/Fe3O4 with controllable interface polarization intensity and wide band electromagnetic absorption performance
文献类型： 外文期刊
作者： Sun, Yan-chun 1 ; Cui, Wen-yu 2 ; Li, Jin-long 3 ; Wu, Jin-zhu 4 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Lab Qual & Safety Risk Assessment Aquat Prod Harb, Minist Agr, Harbin 150070, Heilongjiang, Peoples R China
2.Harbin Univ Commerce, Sch Pharm, Harbin 150076, Heilongjiang, Peoples R China
3.Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China
4.Northeast Agr Univ, Coll Vet Med, Harbin 150030, Heilongjiang, Peoples R China
关键词： In-situ growth; MWCNTs/Fe3O4; Interface polarization strategy; Wideband; Controllable contact area
期刊名称：JOURNAL OF ALLOYS AND COMPOUNDS （ 影响因子：5.316； 五年影响因子：4.631 ）
ISSN： 0925-8388
年卷期： 2019 年 770 卷
页码：
收录情况： SCI
摘要： This research employed an in-situ growth method to fabrication of multi-walled nanotubes (MWCNTs)/Fe3O4 electromagnetic absorber. Such a binary material system is featured with good impedance matching behavior and moderate attenuation ability, thus exhibits excellent electromagnetic absorption properties. The results reveal that MWCNTs/Fe3O4 exhibits distinct polarization relaxation phenomenon which inducted by interface polarization. This intensity of interface polarization is tunable by controlling the contact area of Fe3O4 and MWCNTs. Due to the contribution of interface polarization loss behavior, the MWCNTs/Fe3O4 sample achieves a wide band electromagnetic absorption property which the frequency region with RL < -10 dB can covers 5.7 GHz at 1.5 mm. The method of utilizing interface strategy to boost dielectric loss ability has an efficient way to gain wide band electromagnetic absorber. (C) 2018 Elsevier B.V. All rights reserved.
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