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

• Published in: Physical review. B, Condensed matter Vol. 48:18
• Main Authors: Murani, A.P., Bowden, Z.A., Taylor, A.D., Osborn, R., Marshall, W.G.
• Format: Journal Article
• Language: English
• Published: United States 01-11-1993
• Subjects: BEAMS; CERIUM; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CRYSTAL-PHASE TRANSFORMATIONS; CUBIC LATTICES; ELECTRONIC STRUCTURE; ELEMENTS; ENERGY LEVELS; F STATES; FCC LATTICES; HYBRIDIZATION; INELASTIC SCATTERING; MATERIALS SCIENCE; METALS; NEUTRON BEAMS; NUCLEON BEAMS; PARTICLE BEAMS; PHASE TRANSFORMATIONS; RARE EARTHS; SCATTERING; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 360104 > Metals & Alloys > Physical Properties
• ISSN: 0163-1829; 1095-3795
• DOI: 10.1103/PhysRevB.48.13981

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.