Novel Interface in CuAg Nanostructure Induced by Size Effect
| Autor: | Luping Tang, Lei Zhang, Tao Xu, Litao Sun, Qiubo Zhang, Wei Wu, Longbing He, Kaihao Yu |
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| Rok vydání: | 2019 |
| Předmět: |
Nanostructure
Materials science Annealing (metallurgy) Intermetallic Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Transmission electron microscopy Chemical physics Miniaturization General Materials Science Particle size Physical and Theoretical Chemistry 0210 nano-technology Bimetallic strip |
| Zdroj: | The Journal of Physical Chemistry Letters. 10:1973-1980 |
| ISSN: | 1948-7185 |
| DOI: | 10.1021/acs.jpclett.9b00484 |
| Popis: | Bimetallic Janus nanostructures (JNs) have been revealed to be valuable materials because they have unique intermetallic interfaces that enable their potential use in a range of applications. However, with the increasing miniaturization of electronic devices, particle sizes influence the structure and orientation of these heterointerfaces, which plays a significant role in their application. Our in situ annealing experiments with high-resolution transmission electron microscopy have shown that for particle sizes in the sub-10 nm range, CuAg JNs preferentially show a Cu(100)/Ag(100) interface, differing from the larger CuAg JNs, where the Cu(111)/Ag(111) interface is favored. We discuss a feasible atomic motion mechanism to explain the effect of particle size on the formation of different heterointerfaces. Our results reveal the presence of a novel sub-10 nm heterostructure with a unique Cu(100)/Ag(100) interface and also provide crucial insights into understanding the role of particle size in interfacial evolution during thermal annealing of heterostructures. |
| Databáze: | OpenAIRE |
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