Relating fragile-to-strong transition to fragile glass via lattice model simulations

Ong, Chin-Yuan, Lee, Chun-Shing, Gao, Xin-Yuan, Zhai, Qiang, Yu, Zhenhao, Shi, Rui, Deng, Hai-Yao ORCID: https://orcid.org/0000-0001-6065-483X and Lam, Chi-Hang 2024. Relating fragile-to-strong transition to fragile glass via lattice model simulations. Physical review E (statistical, nonlinear, biological, and soft matter physics) 109 (5) , 054124. 10.1103/PhysRevE.109.054124

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Abstract

Glass formers are, in general, classified as strong or fragile depending on whether their relaxation rates follow Arrhenius or super-Arrhenius temperature dependence. There are, however, notable exceptions, such as water, which exhibit a fragile-to-strong (FTS) transition and behave as fragile and strong, respectively, at high and low temperatures. In this work, the FTS transition is studied using a distinguishable-particle lattice model previously demonstrated to be capable of simulating both strong and fragile glasses [C.-S. Lee, M. Lulli, L.-H. Zhang, H.-Y. Deng, and C.-H. Lam, Phys. Rev. Lett. 125, 265703 (2020)]. Starting with a bimodal pair-interaction distribution appropriate for fragile glasses, we show that by narrowing down the energy dispersion in the low-energy component of the distribution, a FTS transition is observed. The transition occurs at a temperature at which the stretching exponent of the relaxation is minimized, in agreement with previous molecular dynamics simulations.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	American Physical Society
ISSN:	2470-0045
Date of First Compliant Deposit:	26 May 2024
Date of Acceptance:	11 April 2024
Last Modified:	19 Jul 2024 15:13
URI:	https://orca.cardiff.ac.uk/id/eprint/169188

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