Crystal field analysis of Tm/sup 3 +/ and Yb/sup 3 +/ in YPO/sub 4/ and LuPO/sub 4/

Journal Article · Mon Oct 01 04:00:00 EDT 1984 · J. Chem. Phys.; (United States)

OSTI ID:6767651

Becker, P C; Hayhurst, T; Shalimoff, G; Conway, J G; Edelstein, N; Boatner, L A; Abraham, M M

The optical and near infrared absorption of dilute Tm/sup 3 +/ and Yb/sup 3 +/ impurities in YPO/sub 4/ and LuPO/sub 4/ single crystals have been measured at liquid helium and nitrogen temperatures. For Tm/sup 3 +/, the spectral region from 5 000 to 38 000 cm/sup -1/ was examined and Zeeman spectra were obtained in the visible region. The observed transitions were assigned and fit to a semiempirical Hamiltonian with adjustable parameters via a least-squares procedure. Satisfactory fits and good agreement between the calculated and measured g values were obtained. For Yb/sup 3 +/, there are more parameters than experimental levels, so zeta, B/sup 2//sub 0/, B/sup 4//sub 0/, and B/sup 4//sub 4/ were adjusted, while B/sup 6//sub 0/ and B/sup 6//sub 4/ were fixed at the values found for Tm/sup 3 +/. Energy levels and Zeeman splittings calculated with these parameters are in good agreement with the measured quantities.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Physics, University of California, Berkeley, California 94720
• OSTI ID: 6767651
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 81:7; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ABSORPTION SPECTRA
ALLOYS
CRYSTAL FIELD
LUTETIUM COMPOUNDS
LUTETIUM PHOSPHATES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
SPECTRA
THULIUM ADDITIONS
THULIUM ALLOYS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
VISIBLE SPECTRA
YTTERBIUM ADDITIONS
YTTERBIUM ALLOYS
YTTRIUM COMPOUNDS
YTTRIUM PHOSPHATES
ZEEMAN EFFECT