Coadsorption of oxygen with a submonolayer of Fe on GaAs(100): a HREELS investigation
| Autor: | Nan Li, Zhangda Lin, Qing-Zhe Zhang |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
congenital
hereditary and neonatal diseases and abnormalities Hydrogen Passivation Chemistry Inorganic chemistry nutritional and metabolic diseases chemistry.chemical_element Surfaces and Interfaces Substrate (electronics) Condensed Matter Physics Oxygen Surfaces Coatings and Films Overlayer Adsorption Transition metal Monolayer Materials Chemistry Physical chemistry |
| Zdroj: | Surface Science. 271:277-286 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/0039-6028(92)90883-8 |
| Popis: | A high-resolution electron energy-loss spectroscopic (HREELS) study on coadsorption of oxygen with a submonolayer of Fe on a GaAs(100) surface has been presented in this paper. The oxidation passivation for the Fe overlayer and the oxidation promotion for the GaAs(100) substrate are re-examined. By comparison of the results with that on an oxidized GaAs(100) surface in the absence of a Fe overlayer, a specific oxidation feature induced by the Fe overlayer has been revealed and discussed. Analyses of the experimental results and a schematic description of the system lead to an extension of our understanding of the coadsorption as well as of the mechanism of the surface oxidation passivation and oxidation promotion. |
| Databáze: | OpenAIRE |
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