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Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray.

Spectrophotometric studies of lead borotellurite glasses were carried out before and after gamma irradiation exposure. The increasing peak on the TeO4 bi-pyramidal arrangement and TeO3+1 (or distorted TeO4) is due to augmentation of irradiation dose which is attributed to an increase in degree of di...

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Main Authors: Mustafa, Iskandar Shahrim, Mohamed Kamari, Halimah, Wan Yusoff, Wan Mohamad Daud, Abd. Aziz, Sidek, Abdul Rahman, Azhar
Format: Article
Language:English
English
Published: Multidisciplinary Digital Publishing Institute 2013
Online Access:http://psasir.upm.edu.my/id/eprint/29992/1/Structural%20and%20optical%20properties%20of%20lead.pdf
http://psasir.upm.edu.my/id/eprint/29992/
http://www.mdpi.com/1422-0067/14/2
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spelling my.upm.eprints.299922015-10-07T08:25:01Z http://psasir.upm.edu.my/id/eprint/29992/ Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray. Mustafa, Iskandar Shahrim Mohamed Kamari, Halimah Wan Yusoff, Wan Mohamad Daud Abd. Aziz, Sidek Abdul Rahman, Azhar Spectrophotometric studies of lead borotellurite glasses were carried out before and after gamma irradiation exposure. The increasing peak on the TeO4 bi-pyramidal arrangement and TeO3+1 (or distorted TeO4) is due to augmentation of irradiation dose which is attributed to an increase in degree of disorder of the amorphous phase. The structures of lead tellurate contain Pb3TeO6 consisting of TeO3 trigonal pyramid connected by PbO4 tetragonal forming a three-dimensional network. The decrease of glass rigidity is due to irradiation process which is supported by the XRD diffractograms results. The decreasing values of absorption edge indicate that red shift effect occur after irradiation processes. A shift in the optical absorption edge attributed to an increase of the conjugation length. The values of optical band gap, Eopt were calculated and found to be dependent on the glass composition and radiation exposure. Generally, an increase and decrease in Urbach’s energy can be considered as being due to an increase in defects within glass network. Multidisciplinary Digital Publishing Institute 2013-02-04 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/29992/1/Structural%20and%20optical%20properties%20of%20lead.pdf Mustafa, Iskandar Shahrim and Mohamed Kamari, Halimah and Wan Yusoff, Wan Mohamad Daud and Abd. Aziz, Sidek and Abdul Rahman, Azhar (2013) Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray. International Journal of Molecular Sciences, 14 (2). pp. 3201-3214. ISSN 1661-6596; ESSN: 1422-0067 http://www.mdpi.com/1422-0067/14/2 10.3390/ijms14023201 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description Spectrophotometric studies of lead borotellurite glasses were carried out before and after gamma irradiation exposure. The increasing peak on the TeO4 bi-pyramidal arrangement and TeO3+1 (or distorted TeO4) is due to augmentation of irradiation dose which is attributed to an increase in degree of disorder of the amorphous phase. The structures of lead tellurate contain Pb3TeO6 consisting of TeO3 trigonal pyramid connected by PbO4 tetragonal forming a three-dimensional network. The decrease of glass rigidity is due to irradiation process which is supported by the XRD diffractograms results. The decreasing values of absorption edge indicate that red shift effect occur after irradiation processes. A shift in the optical absorption edge attributed to an increase of the conjugation length. The values of optical band gap, Eopt were calculated and found to be dependent on the glass composition and radiation exposure. Generally, an increase and decrease in Urbach’s energy can be considered as being due to an increase in defects within glass network.
format Article
author Mustafa, Iskandar Shahrim
Mohamed Kamari, Halimah
Wan Yusoff, Wan Mohamad Daud
Abd. Aziz, Sidek
Abdul Rahman, Azhar
spellingShingle Mustafa, Iskandar Shahrim
Mohamed Kamari, Halimah
Wan Yusoff, Wan Mohamad Daud
Abd. Aziz, Sidek
Abdul Rahman, Azhar
Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray.
author_facet Mustafa, Iskandar Shahrim
Mohamed Kamari, Halimah
Wan Yusoff, Wan Mohamad Daud
Abd. Aziz, Sidek
Abdul Rahman, Azhar
author_sort Mustafa, Iskandar Shahrim
title Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray.
title_short Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray.
title_full Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray.
title_fullStr Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray.
title_full_unstemmed Structural and optical properties of lead-boro-tellurrite glasses induced by Gamma-ray.
title_sort structural and optical properties of lead-boro-tellurrite glasses induced by gamma-ray.
publisher Multidisciplinary Digital Publishing Institute
publishDate 2013
url http://psasir.upm.edu.my/id/eprint/29992/1/Structural%20and%20optical%20properties%20of%20lead.pdf
http://psasir.upm.edu.my/id/eprint/29992/
http://www.mdpi.com/1422-0067/14/2
_version_ 1643829924641898496
score 13.211869

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