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Extreme hypersensitivity observed from H-6(15/2)<-> F-6(11/2) transition of Dy3+ in inorganic noncrystalline solids SCIE SCOPUS

Title
Extreme hypersensitivity observed from H-6(15/2)<-> F-6(11/2) transition of Dy3+ in inorganic noncrystalline solids
Authors
Choi, YGCurry, RJPark, BJKim, KHHeo, JHewak, DW
Date Issued
2005-02-14
Publisher
ELSEVIER SCIENCE BV
Abstract
Absorption transition from the ground H-6(15/2) state to the superimposed (H-6(9/2), F-6(11/2)) states, inverse transition of which leads the Dy3+: 1.3 mum luminescence, in noncrystalline Ge-As-S alloys is dramatically modified upon a least compositional adjustment by Ga and CsBr. The change in oscillator strength of the Dy3+: H-6(15/2) <----> F-6(11/2) transition in our modified glasses is more sensitive to the local coordination structure of rare-earths compared to other hypersensitive transitions that have been previously observed in solid-state dielectric hosts. Preferential highly symmetric coordination in nearest-neighbouring shell of dysprosium with bromine in [GaS3/2Br](-) complexes, which are formed spontaneously during vitrification process of the host materials, is believed to be responsible for the behaviour. (C) 2005 Elsevier B.V. All rights reserved.
Keywords
1.3 MU-M; RAY-ABSORPTION SPECTROSCOPY; RARE-EARTH IONS; GLASSES; EMISSION; LANTHANIDES; INTENSITIES; SPECTRA; FIBER
URI
https://oasis.postech.ac.kr/handle/2014.oak/24787
DOI
10.1016/j.cplett.2004.12.108
ISSN
0009-2614
Article Type
Article
Citation
CHEMICAL PHYSICS LETTERS, vol. 403, no. 1-3, page. 29 - 34, 2005-02-14
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허종HEO, JONG
Div. of Advanced Nuclear Enginrg
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