Equation of state of platinum based on high temperature and high pressure X-ray data

Abstract

We have measured the T-P-V data of Pt at high temperatures between 800 and 1600 K, and high pressures between 21 and 42 GPa, using synchrotron powder X-ray diffraction experiments at Spring-8. Both a Kawai-type multi-anvil high pressure apparatus with sintered diamond anvils and a laser-heated diamond anvil cell were used to measure higher T-P data of Pt. Combining these measured high P and T data with previously reported 300 K volume compression data, and using the Mie-Greuneisen type thermal pressure analysis, we present the T-P-V EOS of Pt, as a reliable pressure calibration standard at high T and P conditions up to 3000 K and more than 150 GPa.