Nucleation and Growth of p(2 × 2) and c(2 × 2) Adsorption Structures During Oxygen Adsorption on the (100) Surface of Metals at Low Temperatures Full article
Journal |
Surface Science
ISSN: 0039-6028 |
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Output data | Year: 1999, Volume: 441, Number: 2-3, Pages: 399-409 Pages count : 11 DOI: 10.1016/S0039-6028(99)00860-2 | ||
Tags | Chemisorption; Computer simulations; Islands; Lateral interactions; Nucleation; Oxygen; Single crystal surfaces; Surface structures | ||
Authors |
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Affiliations |
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Funding (2)
1 | Russian Foundation for Basic Research | 96-03-32961 |
2 | Russian Foundation for Basic Research | 99-03-32429 |
Abstract:
The nucleation and growth of p(2×2) and c(2×2) adsorption structures during dissociative chemisorption of oxygen on a metal surface with a square lattice of adsorption sites has been studied by Monte Carlo simulation at low temperature (300 K) when the surface diffusion of chemisorbed atoms is slow (i.e., under non-equilibrium conditions). An adsorption model taking into account both direct and indirect adsorption pathways, lateral interactions between chemisorbed particles and their immobility, was used. The p(2×2) islands nucleate due to direct dissociative chemisorption of O2 molecules on 3NN (third-nearest neighbor) adsorption sites occurring via occupation of nearest neighbor (NN) sites by the oxygen atoms followed by hopping of one of the atoms to a 3NN site. The p(2×2) islands grow as a consequence of indirect adsorption occurring via trapping of O2 molecules into precursor states followed by migration above the adsorption island and chemisorption on similar sites at the edges of the adsorption islands. The c(2×2) islands are mostly formed by the merger of antiphase p(2×2) islands that are spatially not coherent with respect to each other in both directions, and grow also as a result of indirect adsorption. Antiphase boundaries are formed by the merger of antiphase p(2×2) islands that are spatially not coherent with respect to each other in one direction.
Cite:
Salanov A.N.
, Bibin V.N.
Nucleation and Growth of p(2 × 2) and c(2 × 2) Adsorption Structures During Oxygen Adsorption on the (100) Surface of Metals at Low Temperatures
Surface Science. 1999. V.441. N2-3. P.399-409. DOI: 10.1016/S0039-6028(99)00860-2 WOS Scopus РИНЦ
Nucleation and Growth of p(2 × 2) and c(2 × 2) Adsorption Structures During Oxygen Adsorption on the (100) Surface of Metals at Low Temperatures
Surface Science. 1999. V.441. N2-3. P.399-409. DOI: 10.1016/S0039-6028(99)00860-2 WOS Scopus РИНЦ
Dates:
Submitted: | Jan 29, 1999 |
Accepted: | Jul 22, 1999 |
Published print: | Nov 1, 1999 |
Published online: | Jan 25, 2000 |
Identifiers:
Web of science | WOS:000083570400022 |
Scopus | 2-s2.0-0033225279 |
Elibrary | 13315518 |
Chemical Abstracts | 1999:707793 |
Chemical Abstracts (print) | 132:84125 |
OpenAlex | W2084464985 |