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Structural Hypotheses And Raman-Spectroscopy Investigations Of Glasses Belonging To The B2s3-Li2s-Lii System

Menetrier, M and Hojjaji, A and Levasseur, A and Couzi, M and Rao, KJ (1992) Structural Hypotheses And Raman-Spectroscopy Investigations Of Glasses Belonging To The B2s3-Li2s-Lii System. In: Physics and Chemistry of Glasses, 33 (6). pp. 222-227.

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Official URL: http://www.ingentaconnect.com/content/sgt/pcg

Abstract

A previous B-11 nuclear magnetic resonance investigation of glasses belonging to the B2S3-Li2S-LiI system had allowed the authors to determine the variation of the number of three and four coordinated boron atoms with composition. These results, in addition to the observation that vitreous B2S3 quite easily forms fibres during casting, have led us to propose structural hypotheses for B2S3 based glasses, which are supported by the present Raman spectroscopy study. For vitreous B2S3 the spectra were accounted for on the basis of the various types of BS3/2 triangles proposed by the model. Molecular orbital considerations allowed us to assign the most significant lines for the binary glasses by assuming that BS3/2 triangles (with or without nonbridging sulphur atoms) and BS4 tetrahedra were present. In the ternary system, lithium iodide has been found to interact slightly on the structural entities, altering their vibrational characteristics without fundamentally modifying their nature.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Society of Glass Technology.
Keywords: Glass;Amorphous state structure;Raman spectrometry; Phase diagram.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 30 May 2011 08:02
Last Modified: 30 May 2011 08:02
URI: http://eprints.iisc.ernet.in/id/eprint/37659

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