TRANSPORT EFFECTS IN A LIQUID IV-VI ALLOY - THE TE-SI SYSTEM

The electrical conductivity, sigma, and the thermoelectric power, S, o f liquid Si-Te alloys have been measured as a function of temperature and concentration near the eutectic composition. Both properties prese nt a 'semiconducting' behavior. Plots of log sigma versus 1/T give str aight lines above the melting point. The transition from a semi-conduc ting to metallic behavior is observed on Te rich alloys at high temper atures. The results are analyzed and discussed.