The Enthalpy of Vitreous Beryllium Fluoride

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概要

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• The enthalpy increments of beryllium fluoride were measured by the drop method in the glassy and liquid states from 450 to 914 K. The other thermodynamic functions were also calculated. The estimated configurational entropy of the supercooled liquid showed its temperature dependence to be small compared with those of nearly all other glass-forming liquids. The theory of Adam and Gibbs was applied to explain both the present enthalpy data and the Arrhenius viscosity behaviour over an unusually wide temperature range. The similarity between beryllium fluoride and silicon dioxide was also shown with respect to the heat capacities of the glassy and supercooled liquid states.

• 公益社団法人 日本化学会の論文

著者

• Yokokawa Toshio

  Department Of Chemistry Faculty Of Science Hokkaido University

• Tamura Seiichi

  Department of Chemistry, Faculty of Science, Hokkaido University

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