Surface relaxation of the platinum (100)−(1 × 1) surface at 175 k
作者： J.A. Davies , T.E. Jackman , D.P. Jackson , P.R. Norton
DOI: 10.1016/0039-6028(81)90508-2
关键词: Adsorption 、 Ion 、 Analytical chemistry 、 Platinum 、 Debye model 、 Monolayer 、 Relaxation (NMR) 、 Microanalysis 、 Surface (mathematics) 、 Chemistry
摘要: Abstract Backscattering of MeV 4He+ ions in conjunction with nuclear microanalysis has been used to study the effect adsorbed gases on interplanar spacing between outermost Pt layers Pt(100)−(1 × 1) surface at 175 K. For “almost clean” surface, is found be within ~0.2% bulk spacing: i.e. unrelaxed. Similar measurements CO- or H2-covered surfaces, however, show that monolayer adsorption either gas produces a small outward relaxation ~0.015 nm (i.e. 0.8%). The results also suggest Debye temperature considerably lower than bulk.
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