Study on thermodynamic property of thin film of BCC interstitial alloy WSi at zero pressure: Dependence on temperature, interstitial atom concentration and film thickness

The article presents a model and derives analytical expressions for Helmholtz free energy, the nearest neighbor distance, isothermal compressibility, the thermal expansion coefficient, the heat capacities at constant volume and constant pressure as functions of temperature, concentration of interstitial atoms, and film’s thickness for an interstitial binary alloy with a BCC structure based on the statistical moment method (SMM).