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Information × Registration Number 2113U001430, Article popup.category Thesis Title popup.author popup.publication 01-01-2013 popup.source_user Сумський державний університет popup.source http://essuir.sumdu.edu.ua/handle/123456789/35175 popup.publisher Sumy State University Description We investigated the role of co-operative and structural effects in surface diffusion of adsorbed atoms with repulsive lateral interactions on the atomic anisotropic metal faces by computer simulation method. Such systems were been considered for which chain superstructures can be formed in submonolayer ad-sorbed films. It is shown that the diffusion coefficients D decrease rapidly with increasing coverage and is-land sizes in those concentration ranges where first order phase transitions take place. The dependence of D on concentration θ is pronounced very weakly in disordered films at temperatures above the critical one. Due to a crowdion mechanism, the diffusion coefficients are rising as the coverage increases in a homoge-neous film in the presence of chain superstructure. Chains commence to change often their positions in the range of critical temperatures. In such conditions, crowdion (quasi-point) configurations of adatoms can as-sociate into soliton-like (quasi-line) formations. The simulation results are compared with experimental data. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35175 popup.nrat_date 2025-05-12 Close