Science and Technology Production
Book Chapter
Authorship
GIMENEZ, MARIA CECILIA
;
Ezequiel P. M. Leiva
;
Ezequiel Albano
Date
2009
Publishing House and Editing Place
Springer
Book
Modern Aspects of Electrochemistry
(pp. 239-287)
Springer
Springer
Summary
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The adsorption of a metal monolayer or submonolayer for the systems Ag/Au(100), Au/Ag(100), Ag/Pt(100), Pt/Ag(100), Au/Pt(100), Pt/Au(100), Au/Pd(100) and Pd/Au(100) was studied by means of lattice Monte Carlo simulations. It was found that for some systems, the adsorbate atoms successively occupy kink sites, step sites and the complete monolayer. On the other hand, for other systems, we observe 2-D alloys between substrate and adsorbate-type atoms. In particular, based on the fact that the und...
The adsorption of a metal monolayer or submonolayer for the systems Ag/Au(100), Au/Ag(100), Ag/Pt(100), Pt/Ag(100), Au/Pt(100), Pt/Au(100), Au/Pd(100) and Pd/Au(100) was studied by means of lattice Monte Carlo simulations. It was found that for some systems, the adsorbate atoms successively occupy kink sites, step sites and the complete monolayer. On the other hand, for other systems, we observe 2-D alloys between substrate and adsorbate-type atoms. In particular, based on the fact that the underpotential deposition of Ag atoms on the Au(100) surface exhibits sharp first-order phase transition at well defined values of the coexistence chemical potential, we have also performed extensive simulations aimed to investigate the hyteretic dynamic behavior of the system close to coexistence upon the application of a periodic signal.
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Key Words
Underpotential depositionPhase transitionsMonte Carlo simulation