Theory of structural relaxation in glass from the thermodynamics of irreversible processes

Karan Doss and John C. Mauro
Phys. Rev. E 103, 062606 – Published 9 June 2021

Abstract

This work proposes a fundamental thermodynamic description of structural relaxation in glasses by establishing a link between the Prony series solution to volume relaxation derived from the principles of irreversible thermodynamics and asymmetric Lévy stable distribution of relaxation rates. Additionally, it is shown that the bulk viscosity of glass, and not the shear viscosity, is the transport coefficient governing structural relaxation. We also report the distribution of relaxation times and energy barrier heights underpinning stretched exponential relaxation. It is proposed that this framework may be used for qualitative and quantitative descriptions of the relaxation kinetics in glass.

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  • Received 7 March 2021
  • Accepted 12 May 2021

DOI:https://doi.org/10.1103/PhysRevE.103.062606

©2021 American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & ThermodynamicsCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Karan Doss* and John C. Mauro

  • Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA

  • *Corresponding author: kud207@psu.edu
  • Corresponding author: jcm426@psu.edu

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Issue

Vol. 103, Iss. 6 — June 2021

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