Interaction of ytterbium nanofilms grown on tungsten substrates with oxygen

The interaction of ytterbium nanofilms evaporated on tungsten substrates with oxygen has been studied by Auger electron spectroscopy, thermal desorption spectroscopy, and contact potential difference measurements. It has been shown that at room temperature, no oxide is formed in the above interactio...

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Bibliographic Details
Published inPhysics of the solid state Vol. 54; no. 2; pp. 404 - 408
Main Authors Kuz’min, M. V., Mittsev, M. A.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.02.2012
Springer
Subjects
Physics
Physics and Astronomy
Rare earth metals
Solid State Physics
Surface Physics and Thin Films
Tungsten
High Temperature Peak
Chemisorb Layer
Tungsten Substrate
Auger Spectrum
Thermal Desorption Spectroscopy
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Summary:The interaction of ytterbium nanofilms evaporated on tungsten substrates with oxygen has been studied by Auger electron spectroscopy, thermal desorption spectroscopy, and contact potential difference measurements. It has been shown that at room temperature, no oxide is formed in the above interaction. In place of the oxide, a chemisorbed layer of nondissociated O 2 molecules is formed on the surface of the ytterbium nanofilms. This layer modifies the ytterbium. This modification transforms ytterbium from the divalent state into the trivalent state.
ISSN:1063-7834
1090-6460
DOI:10.1134/S106378341202014X