title: Optical and crystallization behavior in Dy3+ doped 40GeSe2-25Ga2Se3-35CsI glass.
abstract: 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.
authors: College of Information Science and Engineering, Ningbo University, Ningbo 315211, China.
authors: Xiang
authors: X
authors: Shen
authors: Qiuhua
authors: Q
authors: Nie
authors: Tiefeng
authors: T
authors: Xu
authors: Shixun
authors: S
authors: Dai
authors: Xunsi
authors: X
authors: Wang
authors: Feifei
authors: F
authors: Chen
authors: Gaobo
authors: G
authors: Yang
mesh_terms: D002152:Calorimetry, Differential Scanning; D002586:Cesium / Q000737:chemistry*; D003460:Crystallization; D004419:Dysprosium / Q000737:chemistry*; D005708:Gallium / Q000737:chemistry*; D005857:Germanium / Q000737:chemistry*; D005898:Glass / Q000032:analysis / Q000737:chemistry; D007454:Iodides / Q000737:chemistry*; D008674:Metals, Rare Earth / Q000032:analysis / Q000737:chemistry; D055095:Optics and Photonics; D018036:Selenium Compounds / Q000032:analysis / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D007454:Iodides; D008674:Metals, Rare Earth; D018036:Selenium Compounds; D005857:Germanium; D004419:Dysprosium; D002586:Cesium; D005708:Gallium; C040050:cesium iodide