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Investigations on Oxyhalide Glasses Synthesized by Microwave Assisted Process

Vijayatha, D and Viswanatha, R and Somashekaraiah, CS and Reddy, Narayana C (2015) Investigations on Oxyhalide Glasses Synthesized by Microwave Assisted Process. In: DAE Solid State Physics Symposium, DEC 21-25, 2015, Amity Univ, Noida, INDIA.

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Official URL: http://dx.doi.org/10.1063/1.4947856

Abstract

Glass formation and properties in the system xPbCl(2)-15PbO-(85-x) PbBr2 (where 0 <= x <= 25) has been prepared by microwave method. The glass forming tendency of the admixtures was also been studied by determining the Hurby's factor (H-R). H-R values of the investigated glasses lie in a short range of 0.14 to 0.24; hence preparation of these glasses is very difficult and requires suitable experimental conditions. Lead bromide and lead chloride are inter-substituted by keeping the concentration of PbO at 15 mol%. Properties like glass transition temperature (T-g), jump in heat capacity (Delta C-p) at T-g, width of glass transition (Delta T), show a composition dependent trend. The stability indices such as H square' and S have also been calculated. These values reveal that PbCl2 rich glasses are less stable while PbBr2 rich glasses are stable, which is well supported by chemical durability studies. The calculated values of glass formation indices fall in right range (G >= 20 for glass formers, for conditional glass formers 10 <= G <= 20 and G<10 for glass modifiers) for compositions studied in the present work.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the AMER INST PHYSICS, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 30 Aug 2016 09:44
Last Modified: 30 Aug 2016 09:44
URI: http://eprints.iisc.ac.in/id/eprint/54528

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