層状含水鉱物ギブサイトの圧力誘起相転移における水素結合の役割

概要

論文の詳細を見る
The crystal structure of η-Al(OH)3, which is a high pressure form of gibbsite (γ-Al(OH)3), was solved by single crystal X-ray diffraction and molecular dynamics simulations. The phase transition mechanism is considered to be the layer-shift type, which may frequently occur for layered hydrous minerals with non-close packing structure of oxygens. The layer-shift transition involves breaking and recombination of hydrogen bonds so that the activation energy of phase transition could directly relate to the strength of hydrogen bonds.
2011-02-28