Changes in the thermoelectric power of electron diffusion and phonon attraction due to the addition of small amounts of impurities (dilute) to copper metal alloys.

Abstract

The changes in thermoelectric power of phonon attraction (∆S^g) and electron diffusion (∆S^e) of Cu-Ag alloy with small concentration to pure copper have been calculated. It is assumed that Rayleigh's law for phonon scattering by impurity material with relaxation time τ_i = (aω⁴)^-1. The experimental results are used to obtain the parameters A and a using numerical methods and calculated at a certain temperature (90K) below the Debye temperature. After that, ∆S^g can be calculated as a function of temperature and displayed, as well as the electron diffusion part (∆S^e) obtained from the equation ∆S^e = ∆S - ∆S^g. The impurity materials used are 0.2% Ag and 0.09% Ag. ∆S^g and ∆S^e show dependence on the percentage of impurity materials.