Effective parameters of metal-dielectric composites: influence of eddy currents due to density fluctuations
Alexey P. Vinogradov, Shah Nawaz Burokur, Said Zouhdi · The European Physical Journal Applied Physics · 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.