| Simple hexagonal structured gold with eight-coordination formed with ordered structural vacancies | |
| Wang, Xuelu1,2; Chen, Chunjin1,2; Jiang, Binbin1; Duan, Huichao1,2; Du, Kui1 | |
| Corresponding Author | Du, Kui(kuidu@imr.ac.cn) |
| 2022-05-01 | |
| Source Publication | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| Volume | 229Pages:9 |
| Abstract | Phase engineering of nanomaterials attracts increasing research interest, as crystal structures of metals often determine their physical and chemical properties. Metals tend to form close-packed crystal structures to maximize their space filling and atomic coordination numbers due to the isotropic metallic bonding. Hitherto no metals yet crystallize with the simple hexagonal packing which has low coordination number and packing fraction. Here, we fabricate a novel simple hexagonal structured gold through in situ selective etching on ordered Cu-Au intermetallic compound, where the new crystal structure has only 8 nearest neighbors for each atom and a low packing fraction of 0.60. The simple hexagonal structured Au demonstrates an electrical conductivity of 389 S/m, approximately 10(5) times lower than that of face centered cubic structured gold, according to first principles calculation, associated with localized valence electrons. The discovery of simple hexagonal structure suggests that metals can form more diverse crystal structures by changing effective atomic volume, which provides a pathway to engineer new structures of metals for novel physical properties and applications. (C) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Structure Transmission electron microscopy Vacancies Phase transformation Electrical conductivity |
| Funding Organization | National Key Research and Development Program of China ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science ; National Natural Science Foun-dation of China ; Institute of Metal Research Chinese Academy of Sciences |
| DOI | 10.1016/j.actamat.2022.117844 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFA0700701] ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science[2019JH3/30100020] ; National Natural Science Foun-dation of China[91960202] ; National Natural Science Foun-dation of China[52171020] ; National Natural Science Foun-dation of China[51901229] ; Institute of Metal Research Chinese Academy of Sciences[552021-PY07] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000791225200008 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173978 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Du, Kui |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Xuelu,Chen, Chunjin,Jiang, Binbin,et al. Simple hexagonal structured gold with eight-coordination formed with ordered structural vacancies[J]. ACTA MATERIALIA,2022,229:9. |
| APA | Wang, Xuelu,Chen, Chunjin,Jiang, Binbin,Duan, Huichao,&Du, Kui.(2022).Simple hexagonal structured gold with eight-coordination formed with ordered structural vacancies.ACTA MATERIALIA,229,9. |
| MLA | Wang, Xuelu,et al."Simple hexagonal structured gold with eight-coordination formed with ordered structural vacancies".ACTA MATERIALIA 229(2022):9. |
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