Exploring the Effects of Higher Compression Orders on the Precision of the Equation of State: A Focus On HCP-Iron as A Case Study

Abstract

Our current research focuses on precisely determining the properties of hcp-iron under extreme compression. We have achieved significant strides in this area by creating a model that incorporates a minimum of eight equations of state. Our comprehensive analysis has unveiled a direct relationship between compression, pressure, and bulk modulus, offering insights into the effect of compression on the Gruneisen parameter. Additionally, we underscore the efficacy of the Srivastava-Pandey equation of state and Birch-Murnaghan in accurately characterising the properties of hcp-iron. This discovery holds promising implications for the realm of material science and engineering. We have observed that equations of state with a higher compression degree exhibit great potential in forecasting hcp-iron properties under high-pressure and compression conditions