Synthesis and characterization of MoS2/Fe@Fe3O4 nanocomposites exhibiting enhanced microwave absorption performance at normal and oblique incidences

被引：0

作者：

Peng Wang ^{[1
]}

Junming Zhang ^{[1
]}

Guowu Wang ^{[1
]}

Benfang Duan ^{[1
]}

Donglin He ^{[1
]}

Tao Wang ^{[1
,2
]}

Fashen Li ^{[1
]}

机构：

[1] Key Laboratory for Magnetism and Magnetic Materials, Ministry of Education, Lanzhou University

[2] Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University

来源：

Journal of Materials Science & Technology | 2019年 / 35卷 / 09期

基金：

中央高校基本科研业务费专项资金资助;

关键词：

Permittivity; Permeability; Microwave absorption; Electromagnetic loss; Interface cancellation;

D O I：

暂无

中图分类号：

TB33 [复合材料]; TB383.1 [];

学科分类号：

070205 ; 0805 ; 080501 ; 080502 ; 1406 ;

摘要：

Herein,we attempted to prepare MoS;/Fe@Fe;O;nanocomposites capable of strongly absorbing broadband incident electromagnetic（EM）radiation and probed the effects of their composition on complex permittivity and permeability at 2-18 GHz.Calculations of normal-incidence reflection losses（RLs）based on EM parameters revealed that the Fe@Fe;0;to MoS;mass ratio strongly influenced the absorption peak intensity and bandwidth.Specifically,an RL peak of-31.8 dB@15.3 GHz and a bandwidth（RL<-10 dB）of 4.8 GHz（13.2-18 GHz）were achieved at a thickness of 1.52 mm and a Fe@Fe;O;to MoS;mass ratio of60:40.Further,RL and bandwidth were investigated for oblique incidence,in which case two kinds of EM waves（TE-electric field perpendicular to plane of incidence;TM-electric field in the plane of incidence）were considered.The absorption peaks of TE and TM waves did not exceed-20 dB when the incidence angle increased to 30°,and the bandwidth（RL<-10 dB）reached 4.2 GHz（TE wave）and 4.0 GHz（TM wave）when this angle was further increased to 40.0° and 50.4°,respectively.Finally,the mechanism of microwave absorption was discussed in detail.

引用

页码：1931 / 1939

页数：9