Geometric Frustration of Icosahedron in Metallic Glasses - Archive ouverte HAL
Article Dans Une Revue Science Année : 2013

Geometric Frustration of Icosahedron in Metallic Glasses

Résumé

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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Matériaux
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hal-00870688 , version 1 (24-04-2023)

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A. Hirata, L.J. Kang, T. Fujita, B. Klumov, K. Matsue, et al.. Geometric Frustration of Icosahedron in Metallic Glasses. Science, 2013, 341 (6144), pp.376-379. ⟨10.1126/science.1232450⟩. ⟨hal-00870688⟩
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