Title: Dilution effect on the U-5f states: U in an Ag matrix
Authors: ELOIRDI RACHELGOUDER THOMASKORZHAVYI P.a.WASTIN FRANCKREBIZANT JEAN
Citation: JOURNAL OF ALLOYS AND COMPOUNDS vol. 386 no. 1-2 p. 70 - 74
Publisher: ELSEVIER SCIENCE SA
Publication Year: 2005
JRC N°: JRC30003
ISSN: 0925-8388
URI: http://www.sciencedirect.com/science/article/pii/S0925838804007741
http://publications.jrc.ec.europa.eu/repository/handle/JRC30003
DOI: 10.1016/j.jallcom.2004.05.058
Type: Articles in periodicals and books
Abstract: The electronic structure of U-diluted in an Ag matrix has been studied in situ by ultraviolet and X-ray photoelectron spectroscopy (UPS and XPS, respectively). UxAg100−x thin films (x = 0–100 at.%) were produced by sputter co-deposition in an Ar atmosphere. UPS spectra of the Ag-4d line indicate formation of a homogeneous mixture despite the fact that U and Ag do not form stable alloys. A major goal of this work was to find out whether the dilution of U atoms in an inert matrix with no bonding states induces the localisation of the U-5f states. Both U-4f core level spectra and the U-5f spectra indicate U-5f delocalisation, down to 5 at.% of uranium in UxAg100−x films.
JRC Directorate:Nuclear Safety and Security

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