New scaling of Adam-Gibbs relation in glass-forming systems

TL;DR

This paper introduces a new scaling method based on the Adam-Gibbs model for glass-forming systems, revealing a universal critical-like behavior of configurational entropy and its relation to dynamics and thermodynamics.

Contribution

It presents a novel scaling approach and a generalized entropy expression, demonstrating universality of the critical exponent across different glass-forming systems.

Findings

Universal pseudocritical exponent n found across studied systems

Good agreement between dynamic relaxation times and thermodynamic data

New scaling method improves understanding of glass transition behavior

Abstract

In this letter we introduced a new scaling method based on Adam-Gibbs model. Moreover, generalised critical-like expression of configurational entropy S_C (T)=S_0 (1-T_K/T)^n is used. Obtained values of pseudocritical exponent n seem to be universal for studied systems and corresponds well with thermodynamic data. Relation between dynamic portrayal represented by primary relaxation time and thermodynamic (specific heat capacity) is in a good agreement.