ISSN:
0142-2421
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Physik
Notizen:
The clean single-crystal VC0.75(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 VC0.75 surface exhibits carbon vacancy-related features in valence band spectroscopy data. This surface was exposed to O2 at 500 °C for up to 10 000 Langmuirs. The oxidation leads to the formation of vanadium oxide, VOx(100), crystallites on the VC0.75(100) substrate. The AFM images indicate that oxide crystallites grow with an elongated shape along 〈001〉 type directions. When heated above 1000 °C, the oxide is unstable and a clean VC0.75(100) surface is produced.
Zusätzliches Material:
10 Ill.
Materialart:
Digitale Medien
