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

Issue		Eur. Phys. J. Appl. Phys. Volume 36, Number 3, December 2006


Page(s)		235 - 239
Section		Nanomaterials and Nanotechnologies
DOI		10.1051/epjap:2006125

Eur. Phys. J. Appl. Phys. 36, 235-239 (2006)
DOI: 10.1051/epjap:2006125

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

H. Guan^{1, 2}, Y. Zhao², S. Liu² and S. Lv²

¹ School of Physical Science and Technology, Yunnan University, Kunming, 650091, P.R. China
² School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116023, P.R. China

dl_guan2003@yahoo.com.cn

(Received: 14 August 2005 / Received in final form: 12 May 2006 / Accepted: 4 September 2006 / Published online: 8 November 2006)

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.

PACS
28.41.Qb - Structural and shielding materials.
52.25.Os - Emission, absorption, and scattering of electromagnetic radiation.
77.84.Lf - Composite materials.

© EDP Sciences 2006

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