Figure 9

Equation of state of fcc-Ar directly compressed between diamond anvils. Top graph: atomic volume vs pressure measured with Au standard28. Current and literature2,3,6 experimental P–V points have been plotted, with an updated pressure metrology for Refs.2,3. Bottom graph: difference between measured volume and volume calculated using quasi-hydrostatic Mie–Grüneisen–Debye (MGD) EoS described in the text and Table 2.