Absence of 2.5 power law for fractal packing in metallic glasses

Jianrui Feng, Pengwan Chen, Mo Li

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

Atomic packing is still a mystery for topologically disordered amorphous solids owing primarily to the absence of Bragg diffraction in this class of materials. Among many hypotheses, fractal packing is suggested based on a scaling relation with '2.5 power law' found in multicomponent metallic glasses. Here we examine the atomic packing critically in a pure Tantalum metallic glass under hydrostatic pressure. Without complications of chemical compositions as in the multicomponent systems, the genuine amorphous structure along in the single component metallic glass exhibits a cubic scaling exponent that indicates absence of the 2.5 power law. However, fractal-like short- and medium-range icosahedral cluster packing is observed; but these substructures do not contribute to the fractal dimension through the power law scaling.

源语言英语
文章编号255402
期刊Journal of Physics Condensed Matter
30
25
DOI
出版状态已出版 - 29 5月 2018

指纹

探究 'Absence of 2.5 power law for fractal packing in metallic glasses' 的科研主题。它们共同构成独一无二的指纹。

引用此

Feng, J., Chen, P., & Li, M. (2018). Absence of 2.5 power law for fractal packing in metallic glasses. Journal of Physics Condensed Matter, 30(25), 文章 255402. https://doi.org/10.1088/1361-648X/aac45f