Torrengo, S and Paul, Mukul Chandra and Halder, A and Das, S and Dhar, A and Sahu, J K and Jain, S and Kir'yanov, A V and d'Acapito, F (2015) EXAFS studies of the local structure of bismuth centers in multicomponent silica glass based optical fiber preforms. Journal of Non-Crystalline Solids, 410. pp. 82-87. ISSN 0022-3093

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Abstract

An Extended X-ray Absorption Fine Structure (EXAFS) analysis of the local structure of bismuth in silicate-glass based optical fiber preforms exhibiting broadband near-infrared luminescence is presented. The valence state of the bismuth ions in alumino-silicate and yttria-alumino-silicate glass hosts is revealed to be Bi3+ and the local geometry is suggested to be a trigonal oxygen pyramid with the electron lone pair positioned opposite to the oxygen atom plane. Furthermore we found that the incorporation of Y2O3 into alumino-silicate glass host does not result in any change in the surrounding Bi structure. (C) 2014 Elsevier B.V. All rights reserved.

Item Type:	Article
Subjects:	Processing Science
Divisions:	Fiber Optics and Photonics
Depositing User:	Bidhan Chaudhuri
Date Deposited:	08 Jan 2016 09:02
Last Modified:	08 Jan 2016 09:02
URI:	http://cgcri.csircentral.net/id/eprint/3117

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