NickelMaghrebV1, Main, Exploration, bibRecord, 000361

Formation of one-dimensional ordered alloy at step edges: An atomistic study of the (2 x 1 ) Ni/Pt alloy on the Pt(997) surface

Identifieur interne : 000361 ( Main/Exploration ); précédent : 000360; suivant : 000362

Formation of one-dimensional ordered alloy at step edges: An atomistic study of the (2 x 1 ) Ni/Pt alloy on the Pt(997) surface

Auteurs : Wafa Essolaani [Tunisie] ; Fabien Picaud [France] ; Christophe Ramseyer [France] ; Pietro Gambardella [Espagne] ; Moncef Said [Tunisie] ; Daniel Spanjaard [France] ; Marie-Catherine Desjonqueres [France]

Source :

Surface science [ 0039-6028 ] ; 2011.

RBID : Pascal:11-0385993

Descripteurs français

Pascal (Inist)
- Système 1 dimension, Gradin, Nickel, Méthode Monte Carlo, Simulation numérique, Microscopie tunnel balayage, Défaut surface, Hétérostructure, Alliage ordonné, Ni.
Wicri :
- topic : Nickel.

English descriptors

KwdEn :
- Digital simulation, Heterostructures, Monte Carlo methods, Nickel, One-dimensional systems, Ordered alloy, Scanning tunneling microscopy, Step, Surface defect.

Abstract

Kinetic Monte Carlo simulations based on a semi-empirical description of the metal-metal interactions are developed to interpret the formation of a one-dimensional Ni/Pt alloy observed at the step feet of the vicinal Pt(997) surface. Deposition of 0.15 monolayer of Ni atoms at T<300 K leads to the formation of a (2 × 1) well-ordered nanowire in agreement with scanning tunneling microscopy observations. Exchange process between Ni and Pt atoms at the upper step edge and neighboring influence appear to be the key point to explain such a well-ordered 1 D alloy. In addition, a subtle decoration of the step adsorption sites is also necessary.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000123
to stream PascalFrancis, to step Curation: 000318
to stream PascalFrancis, to step Checkpoint: 000125
to stream Main, to step Merge: 000370
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Le document en format XML

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<front><div type="abstract" xml:lang="en">Kinetic Monte Carlo simulations based on a semi-empirical description of the metal-metal interactions are developed to interpret the formation of a one-dimensional Ni/Pt alloy observed at the step feet of the vicinal Pt(997) surface. Deposition of 0.15 monolayer of Ni atoms at T<300 K leads to the formation of a (2 × 1) well-ordered nanowire in agreement with scanning tunneling microscopy observations. Exchange process between Ni and Pt atoms at the upper step edge and neighboring influence appear to be the key point to explain such a well-ordered 1 D alloy. In addition, a subtle decoration of the step adsorption sites is also necessary.</div>
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Formation of one-dimensional ordered alloy at step edges: An atomistic study of the (2 x 1 ) Ni/Pt alloy on the Pt(997) surface

Formation of one-dimensional ordered alloy at step edges: An atomistic study of the (2 x 1 ) Ni/Pt alloy on the Pt(997) surface

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri