Ultrathin broadband microwave absorbers using ferromagnetic films

被引：13

作者：

Chen, Ping ^{[1
]}

Li, Ren-kai ^{[1
]}

Gu, Yan ^{[1
]}

Shi, Yue ^{[1
]}

Wu, Rui-xin ^{[1
]}

机构：

[1] Nanjing Univ, Sch Elect Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 349卷

关键词：

Electromagnetic wave absorption; Magnetic film; Magnetic multilayer; FERRITE FILMS;

D O I：

10.1016/j.jmmm.2013.09.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have theoretically studied the absorption performances of microwave absorbers made of ferromagnetic films. For films with different frequency dispersive types of permeability, we have found that only the films with relaxation type of permeability can be used to realize broadband microwave absorbers with thin thickness. The condition for optimal absorption has also been derived. As the demonstrations, we have designed the magnetic film absorbers using Ni-Zn-Co ferrite film and iron nanofilm, respectively. Deploying periodic multilayer structure, the absorbers work at the optimal absorption condition. The numerical results show our absorbers have good absorption performances in broadband microwave frequency range. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：259 / 263

页数：5

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