期刊
SCIENCE
卷 341, 期 6144, 页码 376-379出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1232450
关键词
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资金
- WPI Research Center Initiative for Atoms, Molecules and Materials, Ministry of Education, Culture, Sports, Science and Technology of Japan
- Japan Society for the Promotion of Science [24360260, 24656400]
- A mathematical challenge to a new phase of materials science, Japan Science and Technology Agency-Core Research for Evolutional Science and Technology
- National Natural Science Foundation of China [51271113]
- Grants-in-Aid for Scientific Research [23654020, 24656400] Funding Source: KAKEN
Icosahedral order has been suggested as the prevalent atomic motif of supercooled liquids and metallic glasses for more than half a century, because the icosahedron is highly close-packed but is difficult to grow, owing to structure frustration and the lack of translational periodicity. By means of angstrom-beam electron diffraction of single icosahedra, we report experimental observation of local icosahedral order in metallic glasses. All the detected icosahedra were found to be distorted with partially face-centered cubic symmetry, presenting compelling evidence on geometric frustration of local icosahedral order in metallic glasses.
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