Abstract: Static high pressure devices are widely used to explore vast energy landscapes through the control of both pressure and temperature over several orders of magnitude. Through careful choice of the particular pressure-temperature path it is possible to obtain structural modifications and metastable states of materials with interesting and sometimes unexpected properties. Adding the ability to navigate these energy landscapes as a function of time—by modifying pressure and temperature at specific and varying rates—gives researchers an added layer of control to explore materials synthesis, properties, and metastability. The High Pressure Collaborative Access Team, located at Sector 16 of the Advance Photon Source, has put forth a considerable effort in recent years to develop the tools and techniques to rapidly and precisely vary the pressure and temperature of materials in the diamond anvil cell. Herein we describe the development and implementation of rapid (de)compression, enumerating the complementary advances in synchrotron sources and high frame-rate area detectors, which enable rate-dependent (de)compression studies. Some examples will be highlighted, including multi-stage ramp-and-soak (de)compression, and its applications in studying amorphous ice using rapid (de)compression.
Authors: Jesse S. Smith, Guoyin Shen, Curtis Kenney-Benson, Richard Ferry, Eric Rod, Maddury Somayazulu, and Nenad Velisavljevic
Keywords: Diamond Anvil Cell, High pressure, Ramp compression