标题:Revealing a hidden dynamic signature of the non-Arrhenius crossover in metallic glass-forming liquids
作者:Ren, Nannan ;Hu, Lina ;Wang, Lijin ;Guan, Pengfei
作者机构:[Ren, Nannan ;Hu, Lina ] Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (Ministry of Education), Shandong University, 更多
通讯作者:Hu, Lina
来源:Scripta Materialia
出版年:2020
卷:181
页码:43-47
DOI:10.1016/j.scriptamat.2020.02.012
关键词:Dynamic heterogeneity; Metallic glass; Molecular dynamics (MD) simulations; Relaxation
摘要:We report a scaling collapse of the temperature dependence of structural relaxation in 12 model metallic glass-forming liquids by introducing a characteristic temperature and characteristic time scale under constant dynamic heterogeneity condition. Moreover, we find the onset temperature of cooperative motions, TA, separating Arrhenius and non-Arrhenius behaviors of the relaxation time turns out to be one of the characteristic temperatures, which is evidenced by the constant dynamic heterogeneity at TA for all systems investigated. Our findings reveal a new dynamic signature hidden in TA and offer a new perspective, i.e., constant dynamic heterogeneity condition, to study metallic glass-forming liquids. © 2020
收录类别:EI;SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079324590&doi=10.1016%2fj.scriptamat.2020.02.012&partnerID=40&md5=f5fbd31214ae6c2f2e18a7a712e6d03f
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