Glass Transitions. Glassy States and Two Types of Polyamorphism.

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概要

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• Glass transformations, glass transition temperatures, various glassy states under elevated pressures, and polyamorphism are reviewed. There are two types of polyamorphism in the glassy states: the first is that produced from the history of glass-forming conditions, and the second is that produced from changes in the structure of liquids. A critical point of structural polyamorphism is deduced from the recent experiments on the first-order like glass-glass transition of tetrahedral glasses. The critical point locates on the equilibrium liquid surface in the P-V-T space under an elevated pressure below the glass transition temperature, but above the Kauzmann temperature. The low-temperature limit of the liquid under the critical pressure is the critical point; and the liquid, except the critical pressure, vitrifies gradually without any transition. The equations of the glassy states are briefly discussed.

• 日本高圧力学会の論文

著者

• 直木 基祐

  群馬大学工学部生物化学工学科

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• Glass Transitions. Glassy States and Two Types of Polyamorphism.

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