Dynamic Diamond Anvil Cells as a Tool For Kinetic Studies

ORAL

Abstract

Understanding the kinetics of pressure-induced phase transitions is of broad interest to the fields of both materials science and geoscience; however these studies have previously been complicated by difficulties in achieving both the rapid change from initial conditions and stable pressure conditions that are required in classical kinetic studies. This work focuses on the use of a piezo-electrically driven dynamic diamond anvil cell (dDAC) to achieve a rapid pressure change followed by a steady pressure that enables assessment of a materials transformation kinetics. This technique has been applied to both covalently bonded CdSe and metallically bonded iron and measurements of kinetics have been made during in-situ time-resolved X-ray diffraction at Sector 16-IDB of the Advanced Photon Source.

*This work was supported by Princeton University, the Stewardship Science Graduate Fellowship, the National Nuclear Security Administration, the High Pressure Collaborative Access Team at Argonne National Laboratory and the Department of Energy.

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Presenters

  • John A Copley

    • Princeton University

Authors

  • John A Copley

    • Princeton University

  • Guoyin Shen

    • Argonne National Laboratory
    • High Pressure Collaborative Access Team (HPCAT), X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA

  • Jesse S Smith

    • Argonne National Laboratory

  • Nenad Velisavljevic

    • Lawrence Livermore Natl Lab

  • Thomas S Duffy

    • Princeton University
    • Dept. of Geosciences, Princeton University, Princeton, NJ 08540, USA