Balaji, S and Biswas, Kaushik and Sontakke, Atul D and Gupta, G and Ghosh, D and Annapurna, K (2014) Al2O3 influence on structural, elastic, thermal properties of Yb3+ doped Ba-La-tellurite glass: Evidence of reduction in self-radiation trapping at 1 mu m emission. Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 133. pp. 318-325. ISSN 1386-1425

PDF - Published Version Restricted to Registered users only Download (1385Kb) | Request a copy

Abstract

Ba-La-tellurite glasses doped with Yb3+ ions have been prepared through melt quenching technique by modifying their composition with the inclusion of varied concentration of Al2O3 to elucidate its effects on glass structural, elastic, thermal properties and Yb3+ ion NIR luminescence performance. The FTIR spectral analysis indicates Al2O3 addition is promoting the conversion of BOs from NBOs which have been generated during the process of depolymerisation of main glass forming TeO4 units. The elastic properties of the glass revealed an improved rigidity of the glass network on addition of Al2O3. In concurrence to this, differential thermal analysis showed an increase in glass transition temperature with improved thermal stability factor. Also, Yb3+ fluorescence dynamics demonstrated that, Al2O3 inclusion helps in restraining the detrimental radiation trapping of similar to 1 mu m emission. (C) 2014 Elsevier B.V. All rights reserved.

Item Type:	Article
Subjects:	Glass
Divisions:	Glass
Depositing User:	Bidhan Chaudhuri
Date Deposited:	18 Nov 2014 10:37
Last Modified:	26 May 2016 04:55
URI:	http://cgcri.csircentral.net/id/eprint/2548

Actions (login required)

View Item