Compression of H2O ice to 126 GPa and implications for hydrogen-bond symmetrization: Synchrotron x-ray diffraction measurements and density-functional calculations

DOI

Bibliographic Information

Other Title
  • H2O高圧氷の126 GPaまでの体積変化と水素結合対称化転移 -放射光X線回折測定と密度凡関数計算を用いて-

Description

We examined the volume compression and phase transformations of H2O ice by a combination of synchrotron x-ray diffraction measurements and density-functional calculations up to 126 GPa. The experimental data demonstrate that ice changes its compressibility at 40 and 60 GPa at room temperature, corresponding to the phase transitions from ice VII to dynamically disordered ice VII and subsequently to dynamically disordered ice X. The intermediate phase, dynamically disordered ice VII, is highly compressible, possibly due to quantum effects of protons. In contrast, dynamically disordered ice X and ice X show much smaller compressibility.

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Details 詳細情報について

  • CRID
    1390282680709454848
  • NII Article ID
    130005053732
  • DOI
    10.14862/geochemproc.55.0.75.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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