Hydrogen-Bonding Molecular Chains for High-Temperature Ferroelectricity

Authors

  • Sachio Horiuchi,

    Corresponding author
    1. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305–8562, Japan
    • National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305–8562, Japan.
    Search for more papers by this author
  • Reiji Kumai,

    1. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305–8562, Japan
    Search for more papers by this author
  • Yoshinori Tokura

    1. Department of Applied Physics, The University of Tokyo, Hongo Bunkyo-ku, Tokyo, 113–8656, Japan
    2. Multiferroics Project, ERATO, Japan Science and Technology Agency (JST), Wako, Saitama 351–0198, Japan
    Search for more papers by this author

Abstract

original image

Hydrogen-bonded polar chains with bistable configurations exhibit cooper­ative proton tautomerism and polarity switching when an electric field is applied, as observed by well-defined polarization hysteresis at room temperature. This principle can guarantee the ferroelectricity of strong polarization at low voltage and high temperature in a wide class of molecular materials and should be applied to polymeric and biomolecular systems.

Ancillary