Stark structure of the Yb3+ ion levels in (YbxY1?x)2Ti2O7 and the crystal field in rare-earth titanates with a pyrochlore structure |
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| Authors: | S A Klimin M N Popova E P Chukalina B Z Malkin A R Zakirov E Antic-Fidancev Ph Goldner P Aschehoug and G Dhalenne |
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| Institution: | (1) Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia;(2) Kazan State University, ul. Kremlevskaya 18, Kazan, 420008 Tatarstan, Russia;(3) Laboratoire de Chimie Appliquée de l’état Solide, CNRS UMR 7574, ENSCP, Paris, Cedex 05, F-75231, France;(4) Laboratoire de Physico-Chimie de l’état Solide, Universit’e Paris-Sud, Orsay, F-91405, France |
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| Abstract: | The absorption spectra of Yb2Ti2O7 single crystals and the luminescence and luminescence excitation spectra of Y2Ti2O7: Yb (1%) polycrystals were studied in the temperature range 4.2–300 K. The spectra were analyzed in terms of the crystal-field
theory and the exchange-charge model. Based on the set of crystal-field parameters found for Yb2Ti2O7, analogous sets of parameters were determined for other rare-earth titanates and proved to be in reasonable agreement with
all available experimental data.
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Translated from Fizika Tverdogo Tela, Vol. 47, No. 8, 2005, pp. 1376–1380.
Original Russian Text Copyright ? 2005 by Klimin, Popova, Chukalina, Malkin, Zakirov, Antic-Fidancev, Goldner, Aschehoug,
Dhalenne. |
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