Programme

P.20 -- Poster, NCTP-39

Date: Wednesday, 30-07-2014

Time: 14h00 - 15h30

Investigation of thermodynamic properties of metal thin film by statistical moment method

VU VAN HUNG1, DUONG DAI PHUONG2 , NGUYEN THI HOA3 and LE THI THANH HUONG4

1Vietnam Education Publishing House, 81 Tran Hung Dao, Hanoi, Vietnam 2Hanoi National University of Education, 136 Xuan Thuy Street, Hanoi, Vietnam 3 Fundamental Science Faculty, University of Transport and Communications Lang Thuong, Dong Da, Hanoi, Vietnam 4 Faculty, University of Physics, Hai Phong University, Vietnam

The thermodynamic properties of the metal thin films with body-centered cubic structure at zero pressure are investigated using the statistical moment method (SMM), including the anharmonicity effects of thermal lattice vibrations. The Helmholtz free energy, linear thermal expansion coefficients, specific heats at the constant volume and those at the constant pressure, and are derived in closed analytic forms in terms of the power moments of the atomic displacements. Numerical calculations for thermodynamic quantities of W, Nb, Fe and Ta thin films are found to be in good agreement with those of the other theoretical results and experimental data. Keywords: Statistical moment method, thermodynamic properties, anharmonic, thin films.

Presenter: Duong Dai Phuong