Dimensionless parameter of structural ordering and excess entropy of metallic and tellurite glasses

Using a notion on the excess entropy of glass with respect to the counterpart crystal, we introduce a simple dimensionless order parameter ξ, which changes from ξ→0 to ξ→1. The former case corresponds to a strongly disordered liquid-like structure while the latter instance describes a highly ordered...

Full description

Saved in:
Bibliographic Details
Published inScripta materialia Vol. 239; p. 115783
Main Authors Makarov, A.S., Afonin, G.V., Konchakov, R.A., Khonik, V.A., Qiao, J.C., Vasiliev, A.N., Kobelev, N.P.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.01.2024
Subjects
Calorimetry
Excess entropy
Metallic glasses
Order parameter
Relaxation
Tellurite glasses
Metallic glasses
Relaxation
Calorimetry
Tellurite glasses
Excess entropy
Order parameter
Online AccessGet full text

Cover

More Information
Summary:Using a notion on the excess entropy of glass with respect to the counterpart crystal, we introduce a simple dimensionless order parameter ξ, which changes from ξ→0 to ξ→1. The former case corresponds to a strongly disordered liquid-like structure while the latter instance describes a highly ordered crystal-like glass. This approach is applied to 13 metallic and 2 tellurite glasses. We found that ξ is strongly sensitive to structural state and/or chemical composition. This parameter can be also used for a comparison of the order in glasses belonging to different classes and appears to represent a new way of structural order estimate. It is important that the ordering parameter ξ has a strong correlation with the glass-forming ability.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2023.115783