Effect of ZnO on the thermal properties of tellurite glass

Systematic series of binary zinc tellurite glasses in the form (where to 0.4 with an interval of 0.05 mole fraction) have been successfully prepared via conventional melt cast-quenching technique. Their density was determined by Archimedes method with acetone as buoyant liquid. The thermal expansion...

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Main Authors: Abd. Aziz, Sidek, Shaharuddin, Rosmawati, Zakaria, Azmi, Shaari, Abdul Halim
Format: Article
Language:English
Published: Hindawi Publishing Corporation 2013
Online Access:http://psasir.upm.edu.my/id/eprint/30020/1/30020.pdf
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author Abd. Aziz, Sidek
Shaharuddin, Rosmawati
Zakaria, Azmi
Shaari, Abdul Halim
author_facet Abd. Aziz, Sidek
Shaharuddin, Rosmawati
Zakaria, Azmi
Shaari, Abdul Halim
author_sort Abd. Aziz, Sidek
collection UPM
description Systematic series of binary zinc tellurite glasses in the form (where to 0.4 with an interval of 0.05 mole fraction) have been successfully prepared via conventional melt cast-quenching technique. Their density was determined by Archimedes method with acetone as buoyant liquid. The thermal expansion coefficient of each zinc tellurite glasses was measured using L75D1250 dilatometer, while their glass transition temperature () was determined by the SETARAM Labsys DTA/6 differential thermogravimetric analysis at a heating rate of 20 K min−1. The acoustic Debye temperature and the softening temperature () were estimated based on the longitudinal () and shear ultrasonic () wave velocities propagated in each glass sample. For ultrasonic velocity measurement of the glass sample, MATEC MBS 8000 Ultrasonic Data Acquisition System was used. All measurements were taken at 10 MHz frequency and at room temperature. All the thermal properties of such binary tellurite glasses were measured as a function of ZnO composition. The composition dependence was discussed in terms of ZnO modifiers that were expected to change the thermal properties of tellurite glasses. Experimental results show their density, and the thermal expansion coefficient increases as more ZnO content is added to the tellurite glass network, while their glass transition, Debye temperature, and the softening temperature decrease due to a change in the coordination number (CN) of the network forming atoms and the destruction of the network structure brought about by the formation of some nonbridging oxygen (NBO) atoms.
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spelling upm.eprints-300202017-10-30T03:06:45Z http://psasir.upm.edu.my/id/eprint/30020/ Effect of ZnO on the thermal properties of tellurite glass Abd. Aziz, Sidek Shaharuddin, Rosmawati Zakaria, Azmi Shaari, Abdul Halim Systematic series of binary zinc tellurite glasses in the form (where to 0.4 with an interval of 0.05 mole fraction) have been successfully prepared via conventional melt cast-quenching technique. Their density was determined by Archimedes method with acetone as buoyant liquid. The thermal expansion coefficient of each zinc tellurite glasses was measured using L75D1250 dilatometer, while their glass transition temperature () was determined by the SETARAM Labsys DTA/6 differential thermogravimetric analysis at a heating rate of 20 K min−1. The acoustic Debye temperature and the softening temperature () were estimated based on the longitudinal () and shear ultrasonic () wave velocities propagated in each glass sample. For ultrasonic velocity measurement of the glass sample, MATEC MBS 8000 Ultrasonic Data Acquisition System was used. All measurements were taken at 10 MHz frequency and at room temperature. All the thermal properties of such binary tellurite glasses were measured as a function of ZnO composition. The composition dependence was discussed in terms of ZnO modifiers that were expected to change the thermal properties of tellurite glasses. Experimental results show their density, and the thermal expansion coefficient increases as more ZnO content is added to the tellurite glass network, while their glass transition, Debye temperature, and the softening temperature decrease due to a change in the coordination number (CN) of the network forming atoms and the destruction of the network structure brought about by the formation of some nonbridging oxygen (NBO) atoms. Hindawi Publishing Corporation 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/30020/1/30020.pdf Abd. Aziz, Sidek and Shaharuddin, Rosmawati and Zakaria, Azmi and Shaari, Abdul Halim (2013) Effect of ZnO on the thermal properties of tellurite glass. Advances in Condensed Matter Physics, 2013. art. no. 783207. pp. 1-6. ISSN 1687-8108; ESSN: 1687-8124 https://www.hindawi.com/journals/acmp/2013/783207/abs/ 10.1155/2013/783207
spellingShingle Abd. Aziz, Sidek
Shaharuddin, Rosmawati
Zakaria, Azmi
Shaari, Abdul Halim
Effect of ZnO on the thermal properties of tellurite glass
title Effect of ZnO on the thermal properties of tellurite glass
title_full Effect of ZnO on the thermal properties of tellurite glass
title_fullStr Effect of ZnO on the thermal properties of tellurite glass
title_full_unstemmed Effect of ZnO on the thermal properties of tellurite glass
title_short Effect of ZnO on the thermal properties of tellurite glass
title_sort effect of zno on the thermal properties of tellurite glass
url http://psasir.upm.edu.my/id/eprint/30020/1/30020.pdf
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