Chemical Physics.
Vol. 168.
1992.
P. 29-40
Oscillations of surface composition in Pt-Co alloys induced by CO chemisorption
The influence of carbon monoxide adsorption on surface composition of cobalt alloys, containing 30 and 1 at.% platinum was studied by low energy ion scattering spectroscopy and X-ray photoelectron spectroscopy. Composition oscillations in Co/Pt ratio across the several outermost layers and caused by CO chemisorbed at 400 K were found. XPS indicated the presence of both molecular and dissociatively adsorbed CO. A possible explanation of the surface process which cause these oscillations is proposed. © 1992 J.C. Baltzer A.G. Scientific Publishing Company.
Authors
Shpiro K.S.1
,
Telegina N.S.
2
,
Gryaznov V.M.
2
,
Minachev Kh.M.1
,
Rudny Yu.3
Journal
Publisher
Baltzer Science Publishers, Baarn/Kluwer Academic Publishers
Number of issue
4
Language
English
Pages
375-382
Status
Published
Link
Volume
12
Year
1992
Organizations
- 1 N. D. Zelinsky Institute of Organic Chemistry, USSR Academy of Sciences, Moscow, Russia
- 2 Peoples' Friendship University, Moscow, Russia
- 3 Institute of Low Temperatures and Structure Investigation, Wroclav, Poland
Keywords
binary alloys; compositional oscillations; LEISS, AR XPS; surface segregation
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Avtomatika i Telemekhanika.
1992.
P. 83-92