Electronic structure of Laves-type uranium intermetallics studied with synchrotron radiation

Journal Article · Thu May 01 04:00:00 EDT 1986 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.573512· OSTI ID:5728850

Hoechst, H; Tan, K; Hillebrecht, U

Synchrotron radiation photoemission spectroscopy in the photon energy range h..nu.. = 22--130 eV has been used to study the electronic structure of intermetallic Laves-type compounds UMe/sub 2/, with Me = Mn, Fe, Co, and Ni. With increasing 3d occupation, the 3d states show a much smaller shift away from E/sub F/ than expected from theory. Satellite emission at approx.7.5 eV binding energy, which resonates at the 3p threshold, indicates that the 3d bands are not completely filled in UNi/sub 2/. Resonant valence band photoemission around the U 5d threshold has been used to investigate the U 5f valence band DOS. These 5f states are located at E/sub F/ in UNi/sub 2/ with a FWHM that is much narrower than the experimental resolution ..delta..E = 0.6 eV. In UMn/sub 2/, 5f states are energetically less localized with a FWHM of approx.1.6 eV below E/sub F/.

• Research Organization: Synchrotron Radiation Center, University of Wisconsin--Madison, Stoughton, Wisconsin 53589
• OSTI ID: 5728850
• Journal Information: J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 4:3; ISSN JVTAD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE ALLOYS
ALLOYS
BINDING ENERGY
COBALT ALLOYS
D STATES
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
EMISSION
ENERGY
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL DENSITY
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
F STATES
INTERMETALLIC COMPOUNDS
IRON ALLOYS
LINE WIDTHS
MANGANESE ALLOYS
NICKEL ALLOYS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
SECONDARY EMISSION
SPECTROSCOPY
URANIUM ALLOYS