Effects of gamma irradiation on optical and structural properties of PbO-Bi2O3-B2O3 glasses

被引：140
|
作者：
Sharma, Gopi
Singh, Kulwant [1 ]
Manupriya
Mohan, Shaweta
Singh, Harvinder
Bindra, Sukhleen
机构：
[1] Guru Nanak Dev Univ, Dept Phys, Amritsar 143005, Punjab, India
[2] Guru Nanak Dev Univ, Dept Elect Commun, Amritsar 143005, Punjab, India
来源：
RADIATION PHYSICS AND CHEMISTRY | 2006年 / 75卷 / 09期
关键词：
gamma irradiation; optical band gap; vibrational spectra;
D O I：
10.1016/j.radphyschem.2006.02.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Optical and structural properties of xPbO (.) 2xBi(2)O(3)(1-3x)B2O3 glasses of different composition have been studied using UV-VIS and FTIR spectroscopic techniques. Effects of gamma radiations on glass network and structural units have been studied by irradiating glass samples with a Co-60 radioisotope to the overall dose of 2.5 kGy. It is shown that irradiation causes compaction of the borate network by breaking the bonds between trigonal elements, which leads to a decrease in the optical band gap energy. Changes in the atomic structure before and after the irradiation are observed and explained. (c) 2006 Elsevier Ltd. All rights reserved.
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收藏
页码：959 / 966
页数：8
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