Energy Levels and Predicted Absorption Spectra of Rare-Earth Ions in Rare-Earth Arsenides
Abstract
A crystal-field Hamiltonian for octahedral symmetry was used along with free-ion parameters for aqueous solution to fit the reported optical absorption spectra of Er(3+) in ErAs. Predictions showed excellent agreement with reported experimental data at so 74, and 300 K. Consequently, we used an interpolation procedure to predict the crystal-field splittings of the lower multiplets of the rare-earth ions Tb(3+) through Yb(3+) in their respective arsenide compounds. The lowest multiplet energy levels predicted for Tm(3+) and Yb(3+) compare favorably with measurements made by inelastic neutron scattering. In addition, we calculate the absorption spectra for Tb(3+), Dy(3+), Ho(3+), TM(3+), and Yb(3+) in their respective arsenide compounds at 4.2, 77, and 300 K. From these calculations, we show the transitions between the levels of the lowest two J multiplets for each of the ions.... Rare-earth arsenides, Rare- earth spectra.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1992
- Accession Number
- ADA259136
Entities
People
- Clyde A. Morrison
- Donald E. Wortman
Organizations
- Harry Diamond Laboratories