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Article
Ce-catalyzed oxidation of Ta(110)
Physical Review B
Document Type
Article
Disciplines
Publication Date
7-1-1990
DOI
10.1103/PhysRevB.42.1526
Abstract
Photoemission spectroscopy was used to investigate the initial oxidation of the Ce/Ta(110) interface at room temperature. The oxidation of Ta(110) is dramatically enhanced by a thin Ce overlayer. A Ta suboxide TaOχ (0.5≤χ≤1) is formed first in the interface, followed by the rapid formation of Ta2O5 upon further oxygen exposure. A weak interface reaction exists in Ce/Ta(110), but is excluded as the main cause of the catalytic oxidation. An earlier suggestion is reconfirmed that the Ce layer converts O2 to oxygen ions and thus promotes the oxidation of the substrate.
Copyright Owner
The American Physical Society
Copyright Date
1990
Language
en
File Format
application/pdf
Citation Information
C. Gu, David W. Lynch, A. B. Yang and C. G. Olson. "Ce-catalyzed oxidation of Ta(110)" Physical Review B Vol. 42 Iss. 3 (1990) p. 1526 - 1532 Available at: http://works.bepress.com/david_lynch1/68/
This article is from Physical Review B 42 (1990): 1526, doi:10.1103/PhysRevB.42.1526. Posted with permission.