The University of Southampton
University of Southampton Institutional Repository

Raman spectroscopic studies of quaternary tellurite glasses containing Nb2O5 and Ta2O5

Raman spectroscopic studies of quaternary tellurite glasses containing Nb2O5 and Ta2O5
Raman spectroscopic studies of quaternary tellurite glasses containing Nb2O5 and Ta2O5
New quaternary glasses in the systems TeO2–BaO–SrO–Nb2O5 and TeO2–BaO–SrO–Ta2O5 are prepared, and are found to have improved thermal stabilities and refractive indices, making them suitable for photonics device applications. Systematic Raman spectroscopic studies of these glasses are undertaken to unravel the presence of various structural units, and the contributions made by them with varying modifier oxides contents have been quantified. A comparative study is made on the evolution of various structural units with the addition of modifier oxides in the two glass systems. The Raman bandwidths of these glasses are broader compared to conventional tellurite glasses. Both glass systems show an additional Raman band beyond 870 cm-1 that is not present in other tellurite glass systems. The Nb–O related vibrational band near 870 cm-1 is stronger than the band around 900 cm-1 in the Ta2O5 containing glasses. The coordination geometry of tellurium atoms in the presence of Nb2O5 and Ta2O5 is discussed with the help of molecular modelling results.
0031-9090
359-364
Murugan, G.Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Suzuki, T.
836441d2-7ba2-4b94-854f-c23f3e10662d
Ohishi, Y.
581e6a89-1e2d-4bb7-9996-8f609e27e195
Murugan, G.Senthil
a867686e-0535-46cc-ad85-c2342086b25b
Suzuki, T.
836441d2-7ba2-4b94-854f-c23f3e10662d
Ohishi, Y.
581e6a89-1e2d-4bb7-9996-8f609e27e195

Murugan, G.Senthil, Suzuki, T. and Ohishi, Y. (2005) Raman spectroscopic studies of quaternary tellurite glasses containing Nb2O5 and Ta2O5. Physics and Chemistry of Glasses, 46 (4), 359-364.

Record type: Article

Abstract

New quaternary glasses in the systems TeO2–BaO–SrO–Nb2O5 and TeO2–BaO–SrO–Ta2O5 are prepared, and are found to have improved thermal stabilities and refractive indices, making them suitable for photonics device applications. Systematic Raman spectroscopic studies of these glasses are undertaken to unravel the presence of various structural units, and the contributions made by them with varying modifier oxides contents have been quantified. A comparative study is made on the evolution of various structural units with the addition of modifier oxides in the two glass systems. The Raman bandwidths of these glasses are broader compared to conventional tellurite glasses. Both glass systems show an additional Raman band beyond 870 cm-1 that is not present in other tellurite glass systems. The Nb–O related vibrational band near 870 cm-1 is stronger than the band around 900 cm-1 in the Ta2O5 containing glasses. The coordination geometry of tellurium atoms in the presence of Nb2O5 and Ta2O5 is discussed with the help of molecular modelling results.

Full text not available from this repository.

More information

Published date: 2005

Identifiers

Local EPrints ID: 46113
URI: https://eprints.soton.ac.uk/id/eprint/46113
ISSN: 0031-9090
PURE UUID: 51d84294-e884-4142-88a2-16d7ce61a4f7
ORCID for G.Senthil Murugan: ORCID iD orcid.org/0000-0002-2733-3273

Catalogue record

Date deposited: 22 May 2007
Last modified: 19 Jul 2019 00:54

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×