Modified elastic model for viscosity in glass-forming systems

Siva Priya Jaccani, Ozgur Gulbiten, Douglas C. Allan, John Mauro, Liping Huang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

For most glass-forming liquids, the temperature dependence of viscosity is non-Arrhenius. Despite the technological and geological importance, the origin of this non-Arrhenius temperature dependence of viscosity remains elusive to date and constitutes an important but unsolved problem in condensed-matter physics. It has become increasingly clear in recent years that high-temperature elasticity and viscosity of glass-forming liquids are strongly correlated. This work proposes a modified elastic model to predict equilibrium viscosity of glass-forming liquids. The modified elastic model considers the configurational entropy as a factor controlling the activation energy for viscous flow in addition to the high-frequency shear modulus as in the Dyre shoving model. It works much better than the shoving model in fitting equilibrium viscosity for both strong and fragile systems. The modified model also has the capability to estimate the nonequilibrium isostructural viscosity of glass from the equilibrium viscosity and the temperature-dependent elasticity of the glassy state.

Original languageEnglish (US)
Article number224201
JournalPhysical Review B
Volume96
Issue number22
DOIs
StatePublished - Dec 7 2017

Fingerprint

Viscosity
viscosity
Glass
glass
Elasticity
Liquids
liquids
elastic properties
Condensed matter physics
Temperature
condensed matter physics
temperature dependence
viscous flow
Viscous flow
Entropy
Activation energy
Elastic moduli
entropy
activation energy
shear

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Jaccani, Siva Priya ; Gulbiten, Ozgur ; Allan, Douglas C. ; Mauro, John ; Huang, Liping. / Modified elastic model for viscosity in glass-forming systems. In: Physical Review B. 2017 ; Vol. 96, No. 22.
@article{35422c15243148c39a0e5ccb9959a9b0,
title = "Modified elastic model for viscosity in glass-forming systems",
abstract = "For most glass-forming liquids, the temperature dependence of viscosity is non-Arrhenius. Despite the technological and geological importance, the origin of this non-Arrhenius temperature dependence of viscosity remains elusive to date and constitutes an important but unsolved problem in condensed-matter physics. It has become increasingly clear in recent years that high-temperature elasticity and viscosity of glass-forming liquids are strongly correlated. This work proposes a modified elastic model to predict equilibrium viscosity of glass-forming liquids. The modified elastic model considers the configurational entropy as a factor controlling the activation energy for viscous flow in addition to the high-frequency shear modulus as in the Dyre shoving model. It works much better than the shoving model in fitting equilibrium viscosity for both strong and fragile systems. The modified model also has the capability to estimate the nonequilibrium isostructural viscosity of glass from the equilibrium viscosity and the temperature-dependent elasticity of the glassy state.",
author = "Jaccani, {Siva Priya} and Ozgur Gulbiten and Allan, {Douglas C.} and John Mauro and Liping Huang",
year = "2017",
month = "12",
day = "7",
doi = "10.1103/PhysRevB.96.224201",
language = "English (US)",
volume = "96",
journal = "Physical Review B-Condensed Matter",
issn = "2469-9950",
publisher = "American Physical Society",
number = "22",

}

Modified elastic model for viscosity in glass-forming systems. / Jaccani, Siva Priya; Gulbiten, Ozgur; Allan, Douglas C.; Mauro, John; Huang, Liping.

In: Physical Review B, Vol. 96, No. 22, 224201, 07.12.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Modified elastic model for viscosity in glass-forming systems

AU - Jaccani, Siva Priya

AU - Gulbiten, Ozgur

AU - Allan, Douglas C.

AU - Mauro, John

AU - Huang, Liping

PY - 2017/12/7

Y1 - 2017/12/7

N2 - For most glass-forming liquids, the temperature dependence of viscosity is non-Arrhenius. Despite the technological and geological importance, the origin of this non-Arrhenius temperature dependence of viscosity remains elusive to date and constitutes an important but unsolved problem in condensed-matter physics. It has become increasingly clear in recent years that high-temperature elasticity and viscosity of glass-forming liquids are strongly correlated. This work proposes a modified elastic model to predict equilibrium viscosity of glass-forming liquids. The modified elastic model considers the configurational entropy as a factor controlling the activation energy for viscous flow in addition to the high-frequency shear modulus as in the Dyre shoving model. It works much better than the shoving model in fitting equilibrium viscosity for both strong and fragile systems. The modified model also has the capability to estimate the nonequilibrium isostructural viscosity of glass from the equilibrium viscosity and the temperature-dependent elasticity of the glassy state.

AB - For most glass-forming liquids, the temperature dependence of viscosity is non-Arrhenius. Despite the technological and geological importance, the origin of this non-Arrhenius temperature dependence of viscosity remains elusive to date and constitutes an important but unsolved problem in condensed-matter physics. It has become increasingly clear in recent years that high-temperature elasticity and viscosity of glass-forming liquids are strongly correlated. This work proposes a modified elastic model to predict equilibrium viscosity of glass-forming liquids. The modified elastic model considers the configurational entropy as a factor controlling the activation energy for viscous flow in addition to the high-frequency shear modulus as in the Dyre shoving model. It works much better than the shoving model in fitting equilibrium viscosity for both strong and fragile systems. The modified model also has the capability to estimate the nonequilibrium isostructural viscosity of glass from the equilibrium viscosity and the temperature-dependent elasticity of the glassy state.

UR - http://www.scopus.com/inward/record.url?scp=85039436436&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85039436436&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.96.224201

DO - 10.1103/PhysRevB.96.224201

M3 - Article

AN - SCOPUS:85039436436

VL - 96

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 2469-9950

IS - 22

M1 - 224201

ER -