Rosa A C P, Brito E, Santana W S, Cruz C
Centro de Ciências Exatas e das Tecnologias, <a href="https://ror.org/03raeyn57">Universidade Federal do Oeste da Bahia</a>, Rua Bertioga, 892 Morada Nobre I, 47810-059 Barreiras, Bahia, Brazil.
Phys Rev E. 2024 Jul;110(1-1):014128. doi: 10.1103/PhysRevE.110.014128.
The recently proposed nonadditive stochastic model (NSM) offers a coherent physical interpretation for diffusive phenomena in glass-forming systems. This model presents nonexponential relationships between viscosity, activation energy, and temperature, characterizing the non-Arrhenius behavior observed in supercooled liquids. In this work, we fit the NSM viscosity equation to experimental temperature-dependent viscosity data corresponding to 25 glass-forming liquids and compare the fit parameters with those obtained using the Vogel-Fulcher-Tammann (VFT), Avramov-Milchev (AM), and Mauro-Yue-Ellison-Gupta-Allan (MYEGA) models. The results demonstrate that the NSM provides an effective fitting equation for modeling viscosity experimental data in comparison with other established models (VFT, AM, and MYEGA), characterizing the activation energy in fragile liquids, presenting a reliable indicator of the degree of fragility of the glass-forming liquids.
最近提出的非加和随机模型（NSM）为玻璃形成系统中的扩散现象提供了连贯的物理解释。该模型呈现出粘度、活化能和温度之间的非指数关系，表征了在过冷液体中观察到的非阿累尼乌斯行为。在这项工作中，我们将NSM粘度方程拟合到对应于25种玻璃形成液体的实验温度相关粘度数据，并将拟合参数与使用Vogel-Fulcher-Tammann（VFT）、Avramov-Milchev（AM）和Mauro-Yue-Ellison-Gupta-Allan（MYEGA）模型获得的参数进行比较。结果表明，与其他已建立的模型（VFT、AM和MYEGA）相比，NSM为模拟粘度实验数据提供了一个有效的拟合方程，表征了脆性液体中的活化能，是玻璃形成液体脆性程度的可靠指标。
