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Nearly golden-ratio order in Ta metallic glass |
Yuan-Qi Jiang(蒋元祺)1,2, Ping Peng(彭平)3 |
1 Department of Physics, Nanchang Normal University, Nanchang 330032, China; 2 College of Physics, Jilin University, Changchun 130012, China; 3 School of Material Science&Engineering, Hunan University, Changsha 410082, China |
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Abstract The formation of mono-atomic tantalum (Ta) metallic glass (MG) through ultrafast liquid cooling is investigated by ab-initio molecular dynamics (MD) simulations. It is found that there exists nearly golden ratio order (NGRO) between the nearest and second nearest atoms in Ta MG, which has been indirectly confirmed by Khmich et al. and Liang et al.. The NGRO is another universal structural feature in metallic glass besides the local five-fold symmetry (LFFS). Further analyzing of electronic structure shows that the obvious orientation of covalent bond could be attributed to the NGRO in amorphous Ta at 300 K.
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Received: 28 November 2019
Revised: 10 February 2020
Accepted manuscript online:
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PACS:
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61.25.Mv
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(Liquid metals and alloys)
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64.60.Cn
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(Order-disorder transformations)
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Fund: Project supported by Qinglan Scholars Program of Nanchang Normal University and Natural Science Foundation (Grant No. 20171BAB216001), Scientific Research Project of Education Department of Jiangxi Province, China (Grant Nos. GJJ191114, GJJ161242, and GJJ171110), and the National Natural Science Foundation of China (Grant No. 51871096). |
Corresponding Authors:
Yuan-Qi Jiang
E-mail: yuanqi325@163.com
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Cite this article:
Yuan-Qi Jiang(蒋元祺), Ping Peng(彭平) Nearly golden-ratio order in Ta metallic glass 2020 Chin. Phys. B 29 046105
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