Improvement of Surface Waves Attenuation Performance With a Magnetic Thin Film Loading

Author

Hai-Yan Chen ; Hai-Peng Lu ; Jian-Liang Xie ; Long-Jiang Deng

Author_Institution

State Key Lab. of Electron. Thin Films & Integrated Device, Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

50

Issue

7

fYear

2014

fDate

Jul-14

Firstpage

1

Lastpage

5

Abstract

In this paper, the propagation property of surface electromagnetic waves of a composite structure realized by a grounded dielectric slab covered by a magnetic thin film is analyzed. Based on the method that the magnetic thin film is modeled with the impedance boundary condition, the transcendental equations are derived and are solved using iterative techniques. The attenuations of surface waves are shown for a representative geometry. It is found that the use of the magnetic thin film results in a significant improvement of the surface electromagnetic waves attenuation performance at low frequencies but almost no contribution to the whole thickness. In addition, the cutoff frequency of propagating surface waves can be increased by adjusting the magnetic susceptibility.

Keywords

composite materials; electromagnetic wave absorption; electromagnetic wave propagation; iterative methods; magnetic susceptibility; magnetic thin films; slabs; surface electromagnetic waves; composite structure; grounded dielectric slab; impedance boundary condition; iterative method; magnetic susceptibility; magnetic thin film; surface electromagnetic wave propagation property; transcendental equations; Attenuation; Electromagnetic scattering; Magnetic films; Random access memory; Resistance; Surface impedance; Surface waves; Low frequency; magnetic thin film; radar absorbing material (RAM); surface electromagnetic waves;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2301413

Filename

6717006