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Updated: Apr 23, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Low-temperature excess heat capacity in fresnoite glass and crystal
Kensaku Nakamura1, Yoshihiro Takahashi1, Takumi Fujiwara1
1Department of Applied Physics, Tohoku University, 6-6-05 Aoba-ku, Sendai 980-8579, Japan.
Abstract:
The effect of thermal annealing on low-temperature excess heat capacity was investigated in fresnoite (Ba2TiSi2O8) glass. The amplitudes of the excess heat capacity decreased, and their positions shifted to a higher temperature by relaxation or crystallization. In particular, we revealed that the change in the excess heat capacity during transition from the glassy state to the crystalline state is relatively small compared with that of other oxides. Therefore, it is suggested that distribution of the excess vibrational density of states of the glass is similar to that of the corresponding crystal.
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