Year: 2017
Type: article
Abstract: Using in situ transmission electron microscopy that spatially and temporally resolves the evolution of the atomic structure in the surface and subsurface regions, we find that the surface segregation of Au atoms in a Cu(Au) solid solution results in the nucleation and growth of a (2 × 1) missing-row reconstructed, half-unit-cell thick L1 2 Cu 3 Au(110) surface alloy. Our in situ electron microscopy observations and atomistic simulations demonstrate that the (2 × 1) reconstruction of the Cu 3 Au(110) surface alloy remains as a stable surface structure as a result of the favored Cu–Au diatom configuration.
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, Office of Science, Division of Materials Research, Division of Chemical, Bioengineering, Environmental, and Transport Systems, Basic Energy Sciences, Argonne National Laboratory, Brookhaven National Laboratory, Division of Materials Sciences and Engineering
Awards: G102163711, Collaborative Research: In situ Characterization of Methanol Oxidation Catalyzed by Copper-Based Materials, G107546177, G1285306620, G1286251239, G1313983767, G1664757510, G1678340601, G171842289, G1847291448, Collaborative Research: CDS&E: Experimentally verified nano-oxidation simulations of Cu surfaces, G2287611682, G241279073, G262962599, G2689233032, G3075337988, G3226045097, G3262563802, G3499132524, G357145406, G3589692066, XSEDE 2.0: Integrating, Enabling and Enhancing National Cyberinfrastructure with Expanding Community Involvement, G426311843, G4382344593, G498139845, G513797252, G5387317844, G5535608740, G5765906131, G6597714080, G6806689448, G6821342298, G6848031779, G6918803902, G6965541988, G7463374569, G7494175600, G7583137537, G8164640623, G8423653713, G872144517, G969889393, G993149817
OpenAlex ID: W2772200673