Comparative study of oxidation on Cu and Cu $_{3}$ Au surfaces with a hyperthermal O $_{2}$ molecular beam

Okada, Michio*; Moritani, Kosuke; Fukuyama, Tetsuya*; Mizutani, Hironori*; Yoshigoe, Akitaka ; Teraoka, Yuden; Kasai, Toshio*

Dissociative adsorption of hyperthermal O $_{2}$ molecules on Cu $_{3}$ Au(100) was investigated by X-ray photoemission spectroscopy in conjunction with a synchrotron light source. Comparing the O-uptake curve on Cu $_{3}$ Au with that on Cu, it was found that the dissociative adsorption of O $_{2}$ is more activated (less reactive) due to Au alloying. The low-energy electron-diffraction (LEED) pattern of c(22) for the clean surface turned into the (11) LEED pattern during the oxidation by hyperthermal O $_{2}$ molecular beam, suggesting that the O adsorption induces the Cu-atom segregation on the surface.

Language	:	English
Journal	:	Surface Science
Volume	:	600
Number	:	18
Pages	:	p.4228 - 4232
Publication Year/Month	:	2006/09
Meeting title	:	23rd European Conference on Surface Science (ECOSS-23)
Held date	:	2005/09
Location (city)	:	Berlin
Location (country)	:	Germany
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1016/j.susc.2006.01.149
DOI for research data	:
Keywords	:	Cu; Cu $_{3}$ Au(110); O 1s; Oxygen Molecular Beam; Photoemission Spectroscopy; Synchrotron Radiation; LEED; Hyperthermal Molecular Beam; Oxygen Uptake Curve
Research Facility	:	SPring-8(大型放射光施設)
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	大阪大学

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Registration No. : B20050835
JAEA Abstracts No. : 35000622
Paper Submission No. : 2099

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Comparative study of oxidation on Cu and CuAu surfaces with a hyperthermal O molecular beam

Comparative study of oxidation on Cu and Cu $_{3}$ Au surfaces with a hyperthermal O $_{2}$ molecular beam