Equations of state of six metals above 94 GPa

Compression versus pressure at ambient temperature has been measured for tantalum, gold, and platinum to $94\phantom{\rule{0.3em}{0ex}}\mathrm{GPa}$ and for aluminum, copper, and tungsten to $153\phantom{\rule{0.3em}{0ex}}\mathrm{GPa}$, in a diamond anvil cell. Standard synchrotron x-ray diffraction accuracy in the volume determination could be achieved to the maximum pressure. The current data set is used to recalibrate the static pressure scale based on the ruby luminescence, confirming recent suggestions of an underestimation of pressure. Using an updated pressure calibration, the consistency between ultrasonic, dynamic, and static measurements of the equations of state is improved for these six equations…

• ES
  European Synchrotron Radiation Facility