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A model for the structural transformation processes in lead monolayer adsorbate on Ag(111) faces at high coverages

โœ Scribed by A. Popov; N. Dimitrov; D. Kashchiev; T. Vitanov; E. Budevski

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
480 KB
Volume
38
Category
Article
ISSN
0013-4686

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โœฆ Synopsis

Abstrad-A

theoretical model is proposed for the transformation processes in Pb monolayers of high coverages, underpotentially adsorbed on Ag(ll1). The basic assumption is that these processes are due to one-dimensional diffusion from a thin layer which under the experimental conditions is represented by the monolayer of adsorbed Pb atoms. The results of the model are in good agreement with previous experimental data. Several kinetic and energy parameters describing the transformation process are determined.

๐Ÿ“œ SIMILAR VOLUMES

A model of the structural transformation
A model of the structural transformation processes in lead adsorbate on Ag(111) faces at low coverages
โœ A. Popov; N. Dimitrov; D. Kashchiev; T. Vitanov; E. Budevski ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 245 KB

## Ahseact -Taking into consideration our previous results an attempt is made to describe by a theoretical model the transformation processes in underpotential Pb adsorbate on Ag( 111) at low coverages. The results of the model are in good agreement with the experimental data.

Temperature dependence of the parameters
Temperature dependence of the parameters characterizing the transformation processes in underpotential monolayer adsorbate of lead on Ag(111) at low and high coverages
โœ N. Dimitrov; A. Popov; D. Kashchiev; T. Vitanov ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 411 KB

The temperature dependence of the rate constant and the effective diffusion coefficient of incorporation of lead atoms from an underpotential monolayer adsorbate on Ag(ll1) into the silver crystal lattice at low and high coverages is investigated. The transfer activation energy in both cases and the