Crystal Structure of the High-Pressure γ Phase of Mercury : A Novel Monoclinic Distortion of the Close-Packed Structure(Condensed matter: structure and mechanical and thermal properties)

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概要

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• The crystal structure of the high-pressure γ phase of solid mercury, stable between 12 and 37 GPa, has been determined by powder x-ray diffraction experiments. The structure is monoclinic C2/m with six atoms in the unit cell. A mercury atom is coordinated by 10 to 11 atoms, which are distributed at distances up to 10% longer than the first nearest one. The structure is intimately related to α (simple rhombohedral), β (body-centered-tetragonal) and δ (hexagonal-close-packed) phases of mercury, where the stacking of pseudohexagonal layers is systematically modified. This novel monoclinic distortion of the close-packed structure serves as a new class of dense structures for metallic elements.

• 社団法人日本物理学会の論文
• 2007-02-15

著者

• TAKEMURA K.

  National Institute for Research in Inorganic Materials

• Fujihisa H.

  National Institute Of Advanced Industrial Science And Technology (aist)

• Nakamoto Y.

  Center For Quantum Science And Technology Under Extreme Conditions Osaka University

• NAKANO S.

  National Institute for Materials Science (NIMS)

• OHISHI Y.

  Japan Synchrotron Radiation Research Institute (JASRI)

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• Crystal Structure of the High-Pressure γ Phase of Mercury : A Novel Monoclinic Distortion of the Close-Packed Structure(Condensed matter: structure and mechanical and thermal properties)

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