EPR and optical study of coupled Yb3+ ion pairs in weakly doped LiNbO3:Yb single crystal

EPR and optical study of coupled Yb3+ ion pairs in weakly doped LiNbO3:Yb single crystal The results of electron paramagnetic resonance and optical spectroscopy studies of Yb3+ ions in LiNbO3:1% Yb host crystal are reported. Also some results of Raman spectra measurements are presented. The observed features are assigned to single Yb3+ ions and pairs of dissimilar ions (with different g value) of the type of evenYb3+-evenYb3+. The values of the components of the g-tensor for both ions and interaction exchange tensors are estimated. The value of J = −0.0283 cm−1 shows that the exchange interactions are of antiferromagnetic nature. The most probably the evenYb3+-evenYb3+ pairs substitute for neighborhood Li+-Nb5+ positions what induces gain of distance between ions of about 1 Å. There are no observed dissimilar ion pairs of the type oddYb3+-oddYb3+. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

EPR and optical study of coupled Yb3+ ion pairs in weakly doped LiNbO3:Yb single crystal

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Publisher
Springer Journals
Copyright
Copyright © 2007 by VSP
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1163/156856707782169417
Publisher site
See Article on Publisher Site

Abstract

The results of electron paramagnetic resonance and optical spectroscopy studies of Yb3+ ions in LiNbO3:1% Yb host crystal are reported. Also some results of Raman spectra measurements are presented. The observed features are assigned to single Yb3+ ions and pairs of dissimilar ions (with different g value) of the type of evenYb3+-evenYb3+. The values of the components of the g-tensor for both ions and interaction exchange tensors are estimated. The value of J = −0.0283 cm−1 shows that the exchange interactions are of antiferromagnetic nature. The most probably the evenYb3+-evenYb3+ pairs substitute for neighborhood Li+-Nb5+ positions what induces gain of distance between ions of about 1 Å. There are no observed dissimilar ion pairs of the type oddYb3+-oddYb3+.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jan 1, 2007

References

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