文章基本信息

标题：Low-temperature excess heat capacity in fresnoite glass and crystal
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作者：Kensaku Nakamura ; Yoshihiro Takahashi ; Takumi Fujiwara 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2014
卷号：4
DOI：10.1038/srep06523
出版社：Springer Nature
摘要：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.