Non-additive stochastic model for supercooled liquids: new perspectives for glass science

Antonio Cesar Prado Rosa (), Elias Brito (), Wanisson Santana () and Clebson Cruz ()
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Antonio Cesar Prado Rosa: Universidade Federal do Oeste da Bahia
Elias Brito: Universidade Federal do Oeste da Bahia
Wanisson Santana: Universidade Federal do Oeste da Bahia
Clebson Cruz: Universidade Federal do Oeste da Bahia

The European Physical Journal B: Condensed Matter and Complex Systems, 2024, vol. 97, issue 8, 1-7

Abstract: Abstract We present a review of the Non-additive Stochastic Model (NSM) for supercooled liquids, an efficient approach for diffusive processes that provide a suitable interpretation for the non-Arrhenius dynamics in these materials. Based on a class of non-homogeneous continuity equations, the NSM provides functions to model the thermal behavior of the viscosity and diffusivity in fragile liquids. The model defines a rigorous physical criterion that distinguishes super-Arrhenius from sub-Arrhenius processes, establishes a robust scale of fragility, describes fragile-to-strong curves in Angell’s plot, and provides an accurate fitting equation for experimental viscosity data as effective as others viscosity classic models. Graphic abstract

Date: 2024
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DOI: 10.1140/epjb/s10051-024-00761-w

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