Mixed alkali effect in  Li2O-Na2O-WO3-TeO2 glasses : Optical Parameters

Authors(1) :-Kalsani Venkateshwarlu

Glasses with composition xLi2O-(30-x)Na2O-20WO3-50TeO2 (where x= 0, 5, 10, 15, 20, 25 and 30 mol%) have been prepared using the melt quenching technique. In the present work, the mixed alkali effect (MAE) has been investigated in the above glass system through density and modulated DSC studies. The density and glass transition temperature of the present gasses varies non-linearly, the exhibiting the mixed alkali effect. From the optical absorption studies, the values of direct optical band gap, indirect optical band gap energy (Eo) and Urbach energy(ΔE) have been evaluated. The values of Eo and ΔE vary non-linearly with composition parameter, showing the mixed alkali effect.

Authors and Affiliations

Kalsani Venkateshwarlu
Department of Physical Sciences, Kakatiya Institute of Technology & Science, Warangal, India

Mixed Alkali Effect, Tungsten Based Glasses, Density, Glass Transition Temperature, Optical Absorption.

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Publication Details

Published in : Volume 3 | Issue 6 | September-October 2017
Date of Publication : 2017-10-31
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 672-675
Manuscript Number : IJSRSET1736173
Publisher : Technoscience Academy

Print ISSN : 2395-1990, Online ISSN : 2394-4099

Cite This Article :

Kalsani Venkateshwarlu, " Mixed alkali effect in  Li2O-Na2O-WO3-TeO2 glasses : Optical Parameters, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 3, Issue 6, pp.672-675, September-October-2017.
Journal URL : http://ijsrset.com/IJSRSET1736173

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