Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
114 (2001), S. 3200-3207
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
This work presents a study of the distribution of Yb3+ ions in LiNbO3 and LiNbO3:MgO using cooperative luminescence as a probe. The cooperative rate is measured as a function of Yb3+ concentration in the samples. After comparing the experimental results with simple possibilities for rare earth distribution, a model for the distribution of Yb3+ ions is proposed, in which a fraction of the dopant ions forms pairs with an Yb3+ ion placed at Li+ site and the other one at Nb5+ site, while the rest of the ions are randomly placed at Li+ sites. Moreover, the codoping with MgO enhances the cooperative emission and this is discussed in terms of a more efficient redistribution of Yb3+ ions to Nb5+ sites. © 2001 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1342242
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