Eur. Phys. J. B (2014) 87: 39
https://doi.org/10.1140/epjb/e2014-40888-7

Regular Article

Temperature dependent atomic transport properties of liquid Sn

¹ Department of Physics, Sardar Patel University, Vallabh Vidyanagar - 388120, Gujarat, India
² Department of Physics, School of Sciences, Gujarat University, Ahmedabad - 380009, Gujarat, India

^a e-mail: amit07patel@gmail.com

Received: 1 October 2013
Received in final form: 4 October 2013
Published online: 19 February 2014

Abstract

A simple analytical model for atomic motion of Tankeshwar et al. [J. Phys.: Condens. Matter 3, 3173 (1991)] is used to obtain velocity autocorrelation function (VACF) with the inter-atomic potential and the pair correlation function as required inputs for liquid Sn. For the electron-ion interaction the modified empty-core potential is used, which represents the orthogonalisation effect due to s-core states in such sp-bonded metals. Temperature dependence of structure factor is considered through temperature dependent potential parameter in the pair potential. The coherent behaviour of liquid Sn in terms of the dynamic structure factor employing viscoelastic theory has also been studied. Intrinsic temperature effect has been studied through damping term in the pair potential. The predicted results for VACF, cosine power spectrum, mean square displacement, diffusion and viscosity coefficients have been compared with recent available data, and a good agreement has been achieved.