Correlation between temperature variations of static and dynamic properties in glass-forming liquids.
Phys Rev E
; 94(6-1): 060603, 2016 Dec.
Article
em En
| MEDLINE
| ID: mdl-28085393
ABSTRACT
Detailed analysis of the static structure factor S(Q) in several glass-forming liquids reveals that the temperature variations of the width of the main diffraction peak ΔQ(T) correlate with the fragility of these liquids. This observation suggests a direct connection between rather subtle structural changes and sharp slowing down of structural relaxation in glass-forming liquids. We show that this observation can be rationalized using the Adam-Gibbs approach, through a connection between temperature variations of structural correlation length, l_{c}â¼2π/ΔQ, and the size of cooperatively rearranging regions.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev E
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Estados Unidos