Title: Dilution Effect on the U-5f States: U in an Ag Matrix
Citation: JOURNAL OF ALLOYS AND COMPOUNDS vol. 386 p. 70-74
Publisher: Elsevier B.V.
Publication Year: 2005
JRC N°: JRC30450
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC30450
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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