Chemisorption on (001), (110) and (111) nickel surfaces

Abstract

Comparative features of the chemisorption of reactive gases on the three principal low index clean single crystal faces of nickel and interpretations based on several typical atom-surface interaction models are presented and discussed. The conclusions based on measurements of microscopic parameters are reviewed in terms of data correlated from LEED patterns, computational analysis of LEED spectra, fine structure of Auger peak shapes and variations in work function changes as a function of coverage, exposure and heat treatment. The observed adsorption features are used to distinguish chemisorption phenomena in terms of differences in chemical binding, surface structure and charge transfer. Chemical overlayer systems involving well ordered single surface phases formed on unperturbed substrates most easily lend themselves to quantitative crystallographic analysis. Some comparisons of the results of this study to other experimental and theoretical studies on clean and chemisorbed nickel surfaces are considered. © 1974 The Japan Society of Applied Physics.