Atomically Visualizing Elemental Segregation-Induced Surface Alloying and Restructuring

Zou, Lianfeng; Li, Jonathan; Zakharov, Dmitri; Saidi, Wissam A.; Stach, Eric A.; Zhou, Guangwen

doi:10.1021/acs.jpclett.7b02947

Title: Atomically Visualizing Elemental Segregation-Induced Surface Alloying and Restructuring

Journal Article · Fri Dec 01 00:00:00 EST 2017 · Journal of Physical Chemistry Letters

DOI:https://doi.org/10.1021/acs.jpclett.7b02947· OSTI ID:1436256

^[1]; Li, Jonathan ^[2]; Zakharov, Dmitri ^[3];

^[4];

^[3];

^[1]

Binghamton Univ., NY (United States). Dept. of Mechanical Engineering & Materials Science and Engineering Program
Binghamton Univ., NY (United States). Dept. of Physics, Applied Physics and Astronomy & Materials Science and Engineering Program
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Univ. of Pittsburgh, PA (United States). Dept. of Mechanical Engineering and Materials Science

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 L1₂ Cu₃Au(110) surface alloy. Our in situ electron microscopy observations and atomistic simulations demonstrate that the (2 × 1) reconstruction of the Cu₃Au(110) surface alloy remains as a stable surface structure as a result of the favored Cu-Au diatom configuration.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: SC0012704; ACI-1548562; AC02-06CH11357

OSTI ID:: 1436256

Report Number(s):: BNL-203605-2018-JAAM; TRN: US1900163

Journal Information:: Journal of Physical Chemistry Letters, Vol. 8, Issue 24; ISSN 1948-7185

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 9 works

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Cited By (1)

Surface-reaction induced structural oscillations in the subsurface Sun, Xianhu; Zhu, Wenhui; Wu, Dongxiang Nature Communications, Vol. 11, Issue 1 https://doi.org/10.1038/s41467-019-14167-1	journal	January 2020

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36 MATERIALS SCIENCE
Segregation
Alloying
transmission electron microscopy
reconstruction
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atomistic simulation
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