Abstract
X-ray diffraction studies under high pressure using synchrotron radiation at the Photon Factory are reviewed. In 1983, a system named “MAX80” was constructed, which consists of a cubic anvil type high pressure vessel combined with a 500-ton hydraulic ram and a posi-tioning stage. High quality powder X-ray diffraction studies can be performed using this system in the pressure range up to 12 GPa and in the temperature range from 300 K to 1700 K. Various studies such as precise measurement of the equations of state, phase diagram, and the kinetics of the phase transformations have been carried out using this system.
