Direct Measurements of the Atomic Displacements Related to the Ferroelectric Transition in Sn<sub>2</sub>P<sub>2</sub>S<sub>6</sub>

ORAL

Abstract

The Sn2P2S6 is known to be ferroelecetric and is one of the few Sn based ferroelectric (FE) systems which have been discovered. The true nature of the onset of the electric polarization has not be previously correlated with the changes in atomic structure. We have conducted structural measurements on multiple length scales as a function of temperature. In addition the structural results are compared to the low frequency phonons obtained from Raman scattering measurements. A complete model of the polar state of this system is developed.

*This work is supported by the U.S. Air Force under Grant FA8650-16-D-54.

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Presenters

  • Sizhan Liu

    • New Jersey Inst of Tech
    • New Jersey Institute of Technology

Authors

  • Sizhan Liu

    • New Jersey Inst of Tech
    • New Jersey Institute of Technology

  • Han Zhang

    • New Jersey Inst of Tech
    • New Jersey Institute of Technology
    • Physics, University of Tennessee

  • Sanjit Ghose

    • Brookhaven National Laboratory

  • SuYin Grass Wang

    • Argonne National Laboratory

  • Yu-Sheng Chen

    • Argonne National Laboratory

  • Dean R Evans

    • Air Force Research Lab - WPAFB

  • Trevor Tyson

    • New Jersey Inst of Tech
    • New Jersey Institute of Technology