Studies on Partially Ordered State of Ice XV

  • KOMATSU Kazuki
    Graduate School of Science, The University of Tokyo
  • YAMANE Ryo
    Graduate School of Science, The University of Tokyo
  • NORITAKE Fumiya
    Faculty of Engineering, Graduate Faculty of Interdisciplinary Research, University of Yamanashi Computational Astrophysics Laboratory, RIKEN
  • MACHIDA Shinichi
    Neutron Science and Technology Center, CROSS

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  • 氷XVの部分秩序状態について
  • コオリ XV ノ ブブン チツジョ ジョウタイ ニ ツイテ

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Abstract

<p>Here I discuss a problem of an inconsistency among various experiments and calculations for ice XV, the ordered form of ice VI, i.e., neutron diffraction observations suggest antiferroelectrically ordered structures, which disagree with dielectric measurement and theoretical studies, implying ferroelectrically ordered structures. Our recent neutron diffraction experiments and DFT calculations support a scenario in which several kinds of ordered configuration coexist, which was proposed more than 40 years ago by Kamb. More recently published arguments in terms of this issue are also briefly reviewed.</p>

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