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Journal Article
Research Support, Non-U.S. Gov't
Optical and crystallization behavior in Dy3+ doped 40GeSe2-25Ga2Se3-35CsI glass.
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy 2009 September 16
Dy(3+) doped 40GeSe(2)-25Ga(2)Se(3)-35CsI (GGC) glass was synthesized, and optical spectrum, such as infrared transmission and Vis-Nir absorption was measured. Base on the Judd-Ofelt theory, the three Judd-Ofelt parameters Omega(t) (t=2, 4, 6) were calculated and the results were compared with other chalcogenide glasses. The small Omega(2) in GGC glass is ascribed to the weak covalency of Se-Dy bond. The theory of crystallization kinetics under non-isothermal condition was developed, and was applied to analyze this Dy(3+) doped GGC glass. From the heating-rate dependence of crystallization temperature, the activation energy for crystallization E=148 kJ/mol is obtained, and this value is much smaller than that of the undoped glass host, indicating the introduction of Dy(3+) ions into the GGC glass will get the host crystallized easily.
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