Eur. Phys. J. Appl. Phys.
Volume 46, Number 3, June 2009
|Number of page(s)||4|
|Published online||10 March 2009|
Effective parameters of metal-dielectric composites: influence of eddy currents due to density fluctuations
Institute of Theoretical and Applied Electromagnetism (ITAE), Russian Academy of Sciences, Izhorskaya 13/19, 127412 Moscow, Russia
2 Laboratoire de Génie Électrique de Paris, Plateau de Moulon, 91192 Gif-Sur-Yvette Cedex, France
Corresponding author: firstname.lastname@example.org
Revised: 1 December 2008
Accepted: 5 January 2009
Published online: 10 March 2009
It is shown that the space fluctuations of concentration of conducting inclusions might be responsible for the well-known disagreement between theory and experiment at determining microwave losses in metal-dielectric mixture: the theories (percolation theory, effective medium theory, etc.) predict much lower losses than those measured in experiment. It is demonstrated that if the effective skin depth in the regions occupied by the fluctuation is comparable to the mean diameter of these regions we can expect additional losses.
PACS: 72.80.Tm – Composite materials / 73.43.Cd – Theory and modeling
© EDP Sciences, 2009
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