Abstract
Abstract Ionic conductivity in β′-alumina has been simulated using a modified Monte Carlo method. By calculating the average drift distance of the sodium ions in an electric field, it has been possible to gain access to the correlation factor of the charge carriers as a function of Na concentration, temperature and nearest neighbour interaction energy. It is shown that this factor, which was implied by Sato and Kikuchi (1971) to equal unity at all temperatures and concentrations, has a temperature dependent minimum in the vicinity of a sodium concentration of 0·5. The minima in the tracer correlation factor (calculated previously) and the charge correlation factor disappear in their ratio (the Haven ratio), which remains between the geometrically dependent limiting values of unity and 1/3 for all temperatures and concentrations.
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