Calculation of Electrical Transport Property for Liquid Binary Cu_xAg_1-x Alloys

The electric transport properties named Electrical resistivity of liquid binary Cu_xAg_x-1 alloys is calculated using the extended Ziman’s formula developed by Faber and Ziman at 1423 K. We have seen the behavior of alloys changing the concentration of both Copper and Silver. Form factor,V_ij(q), and partial structure factor, S_ij(q), are the key ingredients of this calculation. For V_ij(q), we have chosen Bretonnet-Silbert (BS) pseudo-potential with Ichimaru-Utsumi (IU), and Vashishta-Singwi (VS) local field correction functions. For structure factor, S_ij(q), we have chosen linearized Weeks-Chandler-Andersen (LWCA) thermodynamic perturbation theory. Calculated results of electrical resistivity comparing with the available experimental data suggest that the choice of VS local field correction function in the potential is important than IU local field correction function. It is also observed that the applied theory with both local field correction functions works well for Ag-rich alloys than those of Cu-rich alloys. To explain the resistivity of Cu-rich alloys more accurately a further study with more sophisticated theory is required.

Another electric transport property named Thermo-Electric Power (TEP) is calculated by taking the derivative of electrical resistivity at a specific point also using the fermi-energy and compared with existed experimental data.