The equation of state of α-U has been measured at 300 K and 14 K up to 60 GPa, and calculated in similar conditions using density functional theory. We observe an unusual behavior of the experimental bulk modulus with temperature, which can be ascribed to the charge-density wave transition undergone in uranium at low temperature and low pressure. This results in a failure of the density functional theory with quasiharmonic thermodynamics to accurately predict the equation of state of α-U in a moderate P-T range (below 20 GPa and 300 K). However, these approximations should yield quantitative results in more extreme conditions.
No takes yet. Share an insight, caveat, or question.
Dewaele et al. (2013) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: