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Temperature dependence of Cu$$_{2}$$O formation on Cu$$_{3}$$Au(110) surface with energetic O$$_{2}$$ molecular beams

Hashinokuchi, Michihiro*; Yoshigoe, Akitaka ; Teraoka, Yuden; Okada, Michio*

We study the surface temperature ($$T$$$$_{rm s}$$) dependence of oxidation on Cu$$_{3}$$Au(110) induced by a hyperthermal O$$_{2}$$ molecular beam (HOMB). The dissociative adsorption of O$$_{2}$$ proceeds accompanying with Cu segregation. From the Ts dependence of the O uptake curve, the direct dissociative adsorption process is a dominant process at less than O coverage ($$Theta$$) of 0.2 ML for the 2.2 eV HOMB incidence. At high $$Theta$$, the oxidation, in particular, the Cu$$_{2}$$O formation, depends on $$T$$$$_{rm s}$$. The high $$T$$$$_{rm s}$$ causes the efficient Cu segregation on the surface during the oxidation, suggesting the dominant role of Cu migration in the Cu$$_{2}$$O formation.

Language

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English

Journal

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Applied Surface Science

Volume

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287

Number

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Pages

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p.282 - 286

Publication Year/Month

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2013/12

Meeting title

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1016/j.apsusc.2013.09.143

DOI for research data

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Keywords

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no keyword

Research Facility

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SPring-8(大型放射光施設)

Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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大阪大学

Accesses

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- Accesses

InCites™

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Percentile:29.39

Category:Chemistry, Physical

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