Clean Surface and Oxidation Behavior of Vanadium Carbide, VC0.75(100)
| Autor: | M. D. Antonik, Thomas M. Christensen, Robert J. Lad |
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| Rok vydání: | 1996 |
| Předmět: |
Vanadium carbide
Materials science Inorganic chemistry Oxide Analytical chemistry Surfaces and Interfaces General Chemistry Substrate (electronics) Condensed Matter Physics Electron spectroscopy Vanadium oxide Surfaces Coatings and Films chemistry.chemical_compound Electron diffraction chemistry X-ray photoelectron spectroscopy Materials Chemistry Crystallite |
| Zdroj: | Surface and Interface Analysis. 24:681-686 |
| ISSN: | 1096-9918 0142-2421 |
| DOI: | 10.1002/(sici)1096-9918(19960930)24:10<681::aid-sia179>3.0.co;2-t |
| Popis: | The clean single-crystal VC 0.75 (100) surface, its oxidation, and the stability of the resulting oxide were examined with electron spectroscopy (AES, XPS and UPS), electron diffraction (low-energy and reflection high energy electron diffraction) and atomic force microscopy (AFM). The clean VC 0.75 surface exhibits carbon vacancy-related features in valence band spectroscopy data. This surface was exposed to O 2 at 500 °C for up to 10 000 Langmuirs. The oxidation leads to the formation of vanadium oxide, VO x (100), crystallites on the VC 0.75 (100) substrate. The AFM images indicate that oxide crystallites grow with an elongated shape along type directions. When heated above 1000 °C, the oxide is unstable and a clean VC 0.75 (100) surface is produced. |
| Databáze: | OpenAIRE |
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