Maqola

Optical spectra, energy levels, and crystal-field analysis of tripositive rare earth ions in Y2O3. I. Kramers ions in <i>C</i>2 sites

N. C. ChangThe Aerospace Corporation, Los Angeles, California 90009John B. GruberDepartments of Physics and Chemistry, Portland State University, Portland, Oregon 97207Richard P. LeavittU.S. Army Electronics Research and Development Command, Harry Diamond Laboratories, Adelphi, Maryland 20783Clyde A. MorrisonU.S. Army Electronics Research and Development Command, Harry Diamond Laboratories, Adelphi, Maryland 20783

1982en

ABI

Annotatsiya

Optical absorption and fluorescence spectra of the Kramers ions Ce3+, Sm3+, Dy3+, and Yb3+ in the C2 sites of Y2O3 are reported. A crystal-field analysis of these data and previously reported data for Nd3+ and Er3+ is performed that is based on a Hamiltonian of C2 point-group symmetry, including J-mixing effects. A best-fit analysis is performed for the ions Nd3+, Sm3+, Dy3+, and Er3+; resulting rms deviations between calculated and experimental levels range from 5.1 to 7.9 cm−1. Results of this analysis are used to obtain a smoothed set of crystal-field parameters for the entire lanthanide series; these smoothed parameters are used to predict the energy levels of Ce3+, Yb3+, and Gd3+ in Y2O3. Predictions for Ce3+ and Yb3+ are compared with experimental data.

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Identifikatorlar

DOI: 10.1063/1.443530

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