Investigation of Room Temperature Oxidation of Cu in Air by Yoneda-XAFS

Journal Article · Fri Feb 02 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2644569· OSTI ID:21054662

Keil, P; Luetzenkirchen-Hecht, D; Frahm, R ^[1]

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1. Faculty C - Department of Physics, Bergische Universitaet Wuppertal, Gaussstr. 20, 42097 Wuppertal (Germany)

The structure of thin copper oxide layers which are formed on metallic Cu due to the exposure to air are investigated with Yoneda-XAFS and ReflEXAFS. The measured Yoneda-XAFS data were compared to quantitative model calculations in the framework of the distorted wave Born approximation (DWBA) assuming different model structures for the oxide layer. Yoneda-XAFS fine structure spectra measured for various different grazing angles show that the experimental data are best described by a model structure consisting of a duplex type oxide layer with an outer layer of CuO (tenorite) in direct contact with the gas atmosphere and an inner Cu2O (cuprite) layer at the interface to the underlying Cu metal.

• OSTI ID: 21054662
• Journal Information: AIP Conference Proceedings, Vol. 882, Issue 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644569; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
COPPER
COPPER OXIDES
CRYSTAL STRUCTURE
DWBA
FINE STRUCTURE
INTERFACES
LAYERS
OXIDATION
REFLECTION
X RADIATION
X-RAY SPECTRA
X-RAY SPECTROSCOPY