Contribution of floppy modes to the heat capacity jump and fragility in chalcogenide glasses

被引：46

作者：

Naumis, GG ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.61.R9205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The jump of the heat capacity in chalcogenide glasses during glass transition is estimated using the number of floppy modes as a free energy. A comparison with experimental data shows good agreement, without using any free parameter. This result allows a determination of the change of the glass fragility and excess thermal expansivity as a function of the average coordination number.

引用

页码：R9205 / R9208

页数：4

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