Electrical resistivity of NaSn compound forming liquid alloy using ab initio pseudopotentials

The electrical resistivity of the compound forming liquid alloy NaSn is studied as a function of concentration. Hard-sphere diameters of Na and Sn are obtained through the inter-ionic pair potentials evaluated using Troullier and Martins ab initio pseudopotential, which have been used to calculate partial structure factors S(q)S(q). Considering the liquid alloy to be a ternary mixture, Ziman's formula for calculating the resistivity of binary liquid alloys, modified for complex formation, has been used. Form factors are calculated using ab initio pseudopotentials. The results suggest that the Ziman formalism, when used with ab initio pseudopotentials, is quite successful in explaining the electrical resistivity data of compound forming binary liquid alloys.