Abstract

The electrical conductivity , thermopower S and magnetic susceptibility of liquid have been measured as a function of c. It is found that decreases monotonically on addition of AgCl to S and reaches a value typical of a molten salt when at which point a semiconductor to molten salt transition takes place. The thermopower is negative for c > 0.3 at which composition it changes sign. The magnetic susceptibility measurements show a steady increase with c, consistent with the changes in the ionic diamagnetism and a significant Pauli contribution from the electrons for the S rich compositions. The behaviour of the system is analysed and described in terms of a simple ionic band picture using a Kubo - Greenwood formalism in which the conductivity gap increases with increasing concentration of AgCl.

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