标题:Power-law scaling of dynamical and structural signatures in liquid metallic nano-film
作者:Zhang, K.;Jiang, Y.Y.;Li, H.;Si, P.C.;Li, Y.F.;Yu, H.Q.;Liew, K.M.;Song, X.G.
作者机构:Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Ji
来源:EPL
出版年:2011
期:4
页码:46005-1-46005-6
摘要:Structural and dynamical features of a liquid metallic nano-film during cooling are investigated by molecular dynamics simulations. Several unique structural transformations from liquid to nano-crystalline or glass are observed. Moreover, the crystalline fraction change and motion propensity are discussed in detail. Results indicate a close relation between the local structural ordering and the dynamic signature. We use a new parameter P(a,τ,ν) as an effective indicator for predicting both local structural order and motion propensity in a metallic nano-film, and find that the fraction of crystalline clusters follows a negative power-law scaling with the cooling rate increasing, which is the inverse of P(a,τ,ν).
资源类型:期刊论文
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