Formulation of a Compression-Dependent Volume Thermal Expansion Coefficient Utilising the Equation of State
Formulation of a Compression-Dependent Volume Thermal Expansion Coefficient Utilising the Equation of State
Authors:
Abhay P Srivastava1, Brijesh K. Pandey1, Anod Kumar Singh2, Reetesh Srivastava3, Harish Chandra Srivastava4, Mukesh Upadhyay5
1Department of Physics & Material Science, Madan Mohan Malviya University of Technology, Gorakhpur (UP), India
2Department of Physics, School of Basic Sciences, Lucknow, (UP), India
3Department of Physics, Nandini Nagar P.G. College, Nawabganj, Gonda, (UP), India
4Munna Lal Inter College, Wazirganj, budaun, (UP), india
5Department of Physics, North Eastern Regional Institute of Science and Technology (NERIST), Nirjuli (Itanagar), Arunachal Pradesh, India
Corresponding author e-mail: abhay.srivastava831@gmail.com
Abstract:
A comprehensive theoretical formulation has been developed to investigate the impact of compression on solid materials' volume thermal expansion coefficient. The volume thermal coefficient depends solely on three key factors: the pressure that varies with compression, the material's bulk modulus at zero pressure, and the first derivative of the bulk modulus concerning pressure at zero pressure. To validate this theoretical approach, computed values obtained from the formulation are meticulously compared with available experimental data. The results reveal a strong correlation between the calculated values and experimental observations, thereby demonstrating the robustness and accuracy of the proposed formulation in describing the behaviour of solids under compression.
Keywords: Equation of state, Volume thermal expansion coefficient, Compression, hcp-iron