Property Improvement for Microwave Absorbing Slabs by Adding Conductive Grains

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Abstract:

The possibility of improving microwave absorption ability for magnetic slabs by adding conductive grains was analyzed within the theory of effective medium. It was found that pure magnetic slabs cannot mediate the contradiction between high absorption ability and high reflection property. Gradient magnetic structure cannot improve the absorption either. Adding conductive grains, however, can simultaneously improve the matching effect and absorption ability of slabs. This result means some methods for fabricating high absorption slabs.

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142-145

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December 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] T. Giannakopoulou, A. Oikonomou, Double-layer microwave absorbers based on materials with large magnetic and dielectric losses. J. Magnetism and Magnetic Materials, 271 (2004) 224-229.

DOI: 10.1016/j.jmmm.2003.09.040

Google Scholar

[2] V. Korenivski, Magnetic films for GHz applications. J. Appl. Phy. 81 (1997) 1024-1026.

Google Scholar

[3] Z.Y. Zeng, X.L. Lv, C. Wu, Effective electro-magnetic parameters for microwave absorbing ceramics. Key Engineering Materials, 512-515 (2012) 1124-1127.

DOI: 10.4028/www.scientific.net/kem.512-515.1124

Google Scholar

[4] P.S. Neelakanta, Complex permittivity of a conductor-loaded dielectric. J. Phys.: Condens. Matter, 2 (1990) 4935-4947.

DOI: 10.1088/0953-8984/2/22/014

Google Scholar

[5] L. Gao, L.P. Gu, Y.Y. Huang, Effective medium approximation for optical bistability in nonlinear metal-dielectric composites. Solid State Communications, 129 (2004) 593-598.

DOI: 10.1016/j.ssc.2003.12.007

Google Scholar