Switching dynamics in Croconic Acid thin film

ORAL

Abstract

Croconic Acid (CA) exhibits ferroelectricity due to proton displacement between molecules. The voltage and pulse duration dependence of polarization switching in CA thin film are studied using piezoresponse force microscopy (PFM). From this study, the microscopic mechanism of CA polarization switching is revealed. And the KAI domain growth model is used to fit with this switching dynamic behavior. From the fitting, the dimensionality of domain wall, the nucleation activation energy and other structural parameters are obtained. Also, the dependence of film thickness and substrate effect for CA switching are investigated. This study should be helpful for the control experiments in the ferroelectric devices and organic spin-valves using CA as the spacer.

*This work is primarily funded by the U.S. Department of Energy, Office of Science. (Grant DE-SC0019173)

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Presenters

  • Xuanyuan Jiang

    • University of Nebraska - Lincoln
    • Department of Physics and Astronomy, University of Nebraska - Lincoln
    • Department of Physics and Astronomy, University of Nebraska

Authors

  • Xuanyuan Jiang

    • University of Nebraska - Lincoln
    • Department of Physics and Astronomy, University of Nebraska - Lincoln
    • Department of Physics and Astronomy, University of Nebraska

  • Pratyush P Buragohain

    • University of Nebraska - Lincoln

  • Shashi Poddar

    • University of Nebraska - Lincoln

  • Haidong Lu

    • University of Nebraska - Lincoln

  • Alexei Gruverman

    • University of Nebraska - Lincoln

  • Xiaoshan Xu

    • University of Nebraska - Lincoln
    • Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska
    • Department of Physics and Astronomy, University of Nebraska - Lincoln
    • Physics & Astronomy, University of Nebraska-Lincoln
    • Department of Physics and Astronomy, University of Nebraska