Far-infrared absorption of small-palladium-particle composites

We use the recently derived size-distribution-dependent expression for the effective dielectric constant of a composite medium. Because of observed clustering of Pd particles we assume a broad size distribution for the small Pd particles embedded in KCl matrix. We obtain very good agreement between our theoretical calculation and experimental results. Values given by earlier theoretical calculations were by a factor of 10 below those supported by the measured data.