Unusual Ferroelectricity of Trans-Unitcell Ion-Displacement and Multiferroic Soliton in Sodium and Potassium Hydroxides.

  title={Unusual Ferroelectricity of Trans-Unitcell Ion-Displacement and Multiferroic Soliton in Sodium and Potassium Hydroxides.},
  author={Yangyang Ren and Shuai Dong and Menghao Wu},
  journal={ACS applied materials \& interfaces},
  volume={10 41},
We show the first-principles evidence of a hitherto unreported type of ferroelectricity with ultralong ion-displacement in sodium and potassium hydroxides. Even a small number of proton vacancies can completely change the mode of proton-transfer from intra-unitcell to trans-unitcell, giving rise to multiferroic soliton with "mobile" magnetism and a tremendous polarization that can be orders of magnitude higher compared with most perovskite ferroelectrics. Their vertical polarizations of thin… 
Fullerene-based 0D ferroelectrics/multiferroics for ultrahigh-density and ultrafast nonvolatile memories.
  • T. Zhong, Menghao Wu
  • Medicine, Materials Science
    Physical chemistry chemical physics : PCCP
  • 2020
The first-principles design of 0D ferroelectrics/multiferroics based on polar functionalized fullerene is shown, which turns out that the ferroelectric polarization of endohedral metallofullerenes can be reversed with the diffusion of metal ions inside when the fullerene is fixed on a substrate.
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