Abstract
The effects of the Pr3+ concentration on the excitation and emission spectra of Pr3+ in (La1−xPrx)2O3, (RE1−x)Prx2O2S (RE = Y, La) (x ⩽0.2), and LiY1−xPrxF4(x⩽0.1) are investigated. Concentration enhancement of vibronic transitions and of certain zero-phonon transitions is observed for the excitation spectrum of Pr3+ in (La1−xPrx)2O3 and (RE1−xPrx)2O2S. These phenomena can be ascribed to superexchange interaction between Pr3+ ions over distances of about 10 Å.
Original language | English |
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Pages (from-to) | 293-300 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 54 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1993 |