Thermopower and dc electrical conductivity measurements are made on Au/SiO (16 at% Au) cermet films, 90 nm thick, prepared by co‐evaporation in vacuo ≈ 1 mPa in the temperature range 164 to 513 K. The thermopower, dc conductivity, and their respective activation energies are fitted to a polynomial expression in 1/T. Above 333 K the experimental results agree well with the small polaron theory whereas below 333 K, multi‐phonon processes are frozen out and it is not possible to distinguish between small polarons and non‐polaronic carriers. The carrier concentration is ≈1022 cm−3. The Benedicks effect is observed in high resistive (>350 Ωcm) cermet films.
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