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Application of manganese dioxide to electromagnetic wave absorber: effective permittivity and absorbing property

Published online by Cambridge University Press:  08 November 2006

H. Guan ,
Y. Zhao ,
S. Liu  and
S. Lv
H. Guan*
Affiliation:
School of Physical Science and Technology, Yunnan University, Kunming, 650091, P.R. China School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116023, P.R. China
Y. Zhao
Affiliation:
School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116023, P.R. China
S. Liu
Affiliation:
School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116023, P.R. China
S. Lv
Affiliation:
School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116023, P.R. China
*
[email protected]
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Abstract

This paper presents the application of manganese dioxide to electromagnetic wave absorber. The effective permittivity was calculated by modified Rayleigh mixing formula, and the electromagnetic wave absorbing properties of composites with different volume fractions of manganese dioxide were investigated by the comparison of calculated and experimental values in 2–12 GHz frequencies. It is found that the pure manganese dioxide holds a high dielectric constant, which is a function of frequency. The manganese dioxide composites show high absorbing performance in low frequencies, and the calculated electromagnetic properties fit the experimental values for large volume fractions used in this study.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 36 , Issue 3 , December 2006 , pp. 235 - 239
Copyright
© EDP Sciences, 2006

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