Programme

P.44 -- Poster, VCTP-44

Date: Tuesday, 30 July 2019

Time: 08:30 - 10:00

Equation of state and thermal expansion of metals Cu, Au, Ag

Pham Duy Tan (1), Bui Duc Tinh (2), and Pham Dinh Tam (3)

(1) Research Department, Tank Armour Command (2) Hanoi National University of Education (3) Le Qui Don Technical University

The thermodynamic properties of metals are studied using the moment method in the statistical dynamics, which allows us to take into account the anharmonicity of thermal lattice vibrations, going beyond the quasi-harmonic approximation. Applying to Cu, Au, and Ag metals, we determine the equation of state and thermal expansion in dimensionless polynomial form. Numerical results for the thermal expansion coefficient and the lattice spacing of these metals in different temperatures and pressure are in good agreement with experiments. Keywords: moment method, effective pair potential.

Presenter: Pham Duy Tan