Evidence for localized 4[ital f] states in [alpha]-Ce

Journal Article · Sun Oct 31 23:00:00 EST 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.13981· OSTI ID:6084415

Murani, A P ^[1]; Bowden, Z A; Taylor, A D ^[2]; Osborn, R ^[3]; Marshall, W G ^[4]

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1. Institut Laue-Langevin, 156X, 38042 Grenoble Cedex (France)
2. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot (United Kingdom)
3. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot (United Kingdom) Argonne National Laboratory, Argonne, Illinois 60439 (United States)
4. Institut Laue-Langevin, 156X, 38042 Grenoble Cedex (France) Birkbeck College, University of London, Malet Street, London (United Kingdom)

Paramagnetic spectra of [gamma] and [alpha]-Ce measured at the [ital same] [ital temperature] using high-energy neutrons ([similar to]2 eV) yield a 4[ital f] occupancy of [similar to]0.8 in [alpha]-Ce. This phase of Ce also shows single-ion magnetic response but with a high Kondo energy of [similar to]1800 K. In [gamma]-Ce we observe the [sup 2][ital F][sub 5/2][r arrow][sup 2][ital F][sub 7/2] spin-orbit (SO) excitation at [similar to]260 meV. Remarkably, [alpha]-Ce also reveals a broad SO excitation shifted to a higher energy ([similar to]450 meV). These observations reinforce the idea of [ital localized] 4[ital f] states in [alpha]-Ce and [ital k]-[ital f] hybridization as the driving mechanism for the [gamma][leftrightarrow][alpha] transition.

• OSTI ID: 6084415
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:18; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
BEAMS
CERIUM
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CUBIC LATTICES
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LEVELS
F STATES
FCC LATTICES
HYBRIDIZATION
INELASTIC SCATTERING
METALS
NEUTRON BEAMS
NUCLEON BEAMS
PARTICLE BEAMS
PHASE TRANSFORMATIONS
RARE EARTHS
SCATTERING
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K