X-ray absorption studies of CeO/sub 2/, PrO/sub 2/, and TbO/sub 2/. I. Manifestation of localized and extended f states in the 3d absorption spectra

Journal Article · Wed Jul 15 00:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.1745· OSTI ID:6229554

Karnatak, R C; Esteva, J h; Dexpert, H; Gasgnier, M; Caro, P E; Albert, L

The 3d x-ray absorption spectra of CeO/sub 2/, PrO/sub 2/, and TbO/sub 2/ show some interesting features. The main lines in these spectra are unusually broad. They are identified by comparison with the 3d-4f atomiclike multiplets observed in Z-1 elements. In these oxides, the positions and the similar form of a weaker structure which is systematically observed at about 3--5 eV above each main line indicate that it is due to the transitions to the extended f type of states. These observations demonstrate a specific behavior of the outermost f electron which differentiates these oxides from other intermediate-valence materials and from the Ce intermetallic compounds.

• Research Organization: Laboratoire pour l'Utilisation du Rayonnement Electromagnetique, Btiment 209d, Universite Paris-Sud, 91405 Orsay, France 0, Universite Paris-Sud, 91405 Orsay, France
• OSTI ID: 6229554
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:3; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTION SPECTRA
ALLOYS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
ENERGY LEVELS
F STATES
HIGH VACUUM
INTERMETALLIC COMPOUNDS
MULTIPLETS
OXIDES
OXYGEN COMPOUNDS
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SPECTRA
TERBIUM COMPOUNDS
TERBIUM OXIDES
X-RAY SPECTRA