Screened Coulomb Model in a Uniform Background Charge for Temperature Dependence of the Structure of Liquid Li₄Pb

Abstract

For the understanding of the temperature dependence of the static structure factor of liquid Li₄Pb, the two-component system consisting of charged hard spheres with screened Coulomb interaction in a uniform neutralizing background charge is investigated in terms of the modified mean spherical approximation. It is found that in respect to the structure reflecting the chemical short range order the calculated temperature-dependence agrees reasonably well with the measured one. This result suggests that the effect of the background charge plays an essential role in the temperature variation of the static structure of liquid Li₄Pb.