Refined equations of state for Cu, Ag, and Au in the sub-TPa region

Abstract

The Equations of State for Cu, Ag, and Au in the sub-TPa region are constraint by correlated fits of all the thermo-physical data at ambient pressure and by theoretical estimates of the intrinsic anharmonicities. A hierarchy in the parameters provides a robust fitting procedure with typical accuracies of the finally calculated pressures of probably better than 1% at temperatures to the melting curve and pressures into the TPa-region.

Keywords:

• Equation of states (EOS)
• Thermo-physical properties
• Cu
• Ag
• and Au
• Anharmonicity
• Practical pressure scales

Acknowledgements

W.B. Holzapfel would like to thank the Department of Physics University of Nevada Las Vegas (UNLV) for great hospitality, which allowed for the basic progress leading to these results. We gratefully acknowledge support from the US Department of Energy Cooperative Agreement No. DE-FC52-06NA26274 with the UNLV.