Joshi, P, Richards, B and Jha, A (2013) Reduction of OH- ions in tellurite glasses using chlorine and oxygen gases. Journal of Materials Research, 28 (23). 3226 - 3233. ISSN 0884-2914
Abstract
Absorption losses in tellurite glasses due to OH- ions were reduced by melting the glasses under a reactive atmosphere of Cl2 + O2 gas. Incorporation of dry Cl2 + O2 gas has a major influence on the reduction of OH- species, which is found to be consistent with thermochemical data. Absorption loss due to OH- ions in bulk glasses prepared from the as-received raw materials and processed under a reactive atmosphere was 1000 and 60 dB/m, respectively. Gaussian fits have been used to identify the different species of OH- attached to the structural units present in the glass. All of the OH- species (free and bonded to Te), units can be reduced by melting the starting raw materials in a reactive atmosphere of Cl2 + O2. The net reduction in OH- absorbance at 3.2 Âm was 1.1 cm-1, which is equivalent to 500 ppm. OH- reduction in tellurite glasses using O2 gas bubbling shows a reduction in the fundamental absorption band from 1.8 to 0.57 cm-1 after 75 min.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2013, Cambridge University Press. This is an author produced version of a paper published in the Journal of Materials Research (28), 2013. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 19 Dec 2014 13:43 |
Last Modified: | 01 Jul 2017 18:16 |
Published Version: | http://dx.doi.org/10.1557/jmr.2013.341 |
Status: | Published |
Publisher: | Cambridge University Press |
Identification Number: | 10.1557/jmr.2013.341 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:81726 |