Anomalously small 4 f -5 d oscillator strengths and 4 f -4 f electronic Raman scattering cross sections for Ce sup 3+ in crystals of LuPO sub 4

Journal Article · Tue Aug 15 04:00:00 EDT 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.4143· OSTI ID:5555173

Williams, G M; Edelstein, N ^[1]; Boatner, L A ^[1]; Abraham, M M ^[2]

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1. Department of Physics, University of California, Berkeley, California 94720 (US) Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720
2. Solid State Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6032

The oscillator strengths for the 4{ital f}{sup 1}{r arrow}5d{sup 1} transitions of Ce{sup 3+} in LuPO{sub 4} were measured from absorption spectra and compared to calculated values. The measured oscillator strengths were found to be between 2.5 and 20 times smaller than the corresponding theoretical values. In addition, absolute cross sections for electronic Raman scattering between the levels of the 4{ital f}{sup 1} configuration of Ce{sup 3+} in LuPO{sub 4} were measured and found to be significantly smaller than those expected from theory. Both of these discrepancies may be explained by a reduction in the radial integral, {l angle}4{ital f}{vert bar}{ital r}{vert bar}5{ital d}{r angle}, for Ce{sup 3+} in the solid state. Absorption data obtained from the literature for the 4{ital f}{sup 1}{r arrow}5d{sup 1} transitions of Ce{sup 3+} in a number of host crystals were used to establish a correlation between the cerium-ion--ligand distance and the reduction in the {l angle}4{ital f}{vert bar}{ital r}{vert bar}5{ital d}{r angle} integral. Effects on electronic Raman scattering cross sections for rare-earth ions in crystals are discussed.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5555173
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:6; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ABSORPTION SPECTRA
CERIUM IONS
CHARGED PARTICLES
CROSS SECTIONS
ELECTRONIC STRUCTURE
ENERGY LEVELS
F STATES
IONS
LUTETIUM COMPOUNDS
LUTETIUM PHOSPHATES
OSCILLATOR STRENGTHS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RAMAN EFFECT
RARE EARTH COMPOUNDS
S STATES
SPECTRA