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A density scaling conjecture for aging glasses.
- Source :
- Journal of Chemical Physics; 8/7/2022, Vol. 157 Issue 5, p1-8, 8p
- Publication Year :
- 2022
-
Abstract
- The aging rate of glasses has traditionally been modeled as a function of temperature, T, and fictive temperature, while density, ρ, is not explicitly included as a parameter. However, this description does not naturally connect to the modern understanding of what governs the relaxation rate in equilibrium. In equilibrium, it is well known that the relaxation rate, γ<subscript>eq</subscript>, depends on temperature and density. In addition, a large class of systems obeys density scaling, which means the rate specifically depends on the scaling parameter, Γ = e(ρ)/T, where e(ρ) is a system specific function. This paper presents a generalization of the fictive temperature concept in terms of a fictive scaling parameter, Γ<subscript>fic</subscript>, and a density scaling conjecture for aging glasses in which the aging rate depends on Γ and Γ<subscript>fic</subscript>. [ABSTRACT FROM AUTHOR]
- Subjects :
- LOGICAL prediction
DENSITY
Subjects
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 157
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 158381866
- Full Text :
- https://doi.org/10.1063/5.0090869