中文版 | English
Title

Five-fold symmetry in Au-Si metallic glass

Author
Corresponding AuthorYang, Xiao-Bao; Xu, Hu
Publication Years
2022-08-01
DOI
Source Title
ISSN
2040-3364
EISSN
2040-3372
Abstract
The first metallic glass of Au-Si alloy for over half a century has been discovered, but its atomic structure is still puzzling. Herein, Au8Si dodecahedrons with local five-fold symmetry are revealed as building blocks in Au-Si metallic glass, and the interconnection modes of Au8Si dodecahedrons determine the medium-range order. With dimensionality reduction, the surface ordering is attributed to the motif transformation of Au8Si dodecahedrons into planar Au5Si pyramids with five-fold symmetry, and thus the self-assembly of Au5Si pyramids leads to the formation of the ordered Au2Si monolayer with the lowest energy. Furthermore, structural similarity analysis is performed to unveil the physical origin of the structural characteristics in different dimensions. The amorphism of Au-Si is due to the smooth energy landscape around the global minimum, while the ordered surface structure occurs due to the steep energy landscape.
URL[Source Record]
Indexed By
SCI ; EI
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
Science, Technology, and Innovation Commission of Shenzhen Municipality["RCYX20200714114523069","ZDSYS20190902092905285"] ; National Natural Science Foundation of China[11974160] ; Guangdong Basic and Applied Basic Research Foundation[2021A1515010328] ; Key Area Research and Development Program of Guangdong Province[2020B010183001]
WOS Research Area
Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS Subject
Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS Accession No
WOS:000843645600001
Publisher
EI Accession Number
20223612695394
EI Keywords
Crystal atomic structure ; Glass ; Gold alloys ; Metallic glass ; Surface structure
ESI Classification Code
Metallurgy and Metallography:531 ; Precious Metals:547.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Glass:812.3 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Atomic and Molecular Physics:931.3 ; Crystal Lattice:933.1.1
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/394160
DepartmentDepartment of Physics
Affiliation
1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
2.South China Univ Technol, Dept Phys, Guangzhou 510640, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen, Peoples R China
First Author AffilicationDepartment of Physics
Corresponding Author AffilicationDepartment of Physics;  Southern University of Science and Technology
First Author's First AffilicationDepartment of Physics
Recommended Citation
GB/T 7714
He, Chang-Chun,Xu, Shao-Gang,Qiu, Shao-Bin,et al. Five-fold symmetry in Au-Si metallic glass[J]. Nanoscale,2022.
APA
He, Chang-Chun.,Xu, Shao-Gang.,Qiu, Shao-Bin.,He, Chao.,Zhao, Yu-Jun.,...&Xu, Hu.(2022).Five-fold symmetry in Au-Si metallic glass.Nanoscale.
MLA
He, Chang-Chun,et al."Five-fold symmetry in Au-Si metallic glass".Nanoscale (2022).
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