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|Title:||UV-visible, infrared and Raman spectroscopic and thermal studies of tungsten doped lead borate glasses and the effect of ionizing gamma irradiation|
|Authors:||El-Kheshen, Amany A|
El-Batal, Fatma H.
Lead borate glasses
|Abstract:||Ultraviolet-visible, infrared and Raman spectroscopy together with thermal properties were measured for undoped and WO₃ – doped (up to 10%) lead borate glasses. Also, the effect of gamma irradiation was followed by UV-visible measurements. The UV-visible spectrum of the undoped glass reveals before irradiation intense ultraviolet bands due to the combined effects of trace iron impurities (Fe³⁺) and Pb²⁺ ions which remain unchanged with the addition of WO₃. Infrared and Raman measurements show characteristic bands due to borate group and the possible sharing of lead-oxygen and tungsten-oxygen groups. The studied glasses show obvious resistance to gamma irradiation. The thermal and density data are correlated with the introduction of highly polarizable and heavy (W⁶⁺) ions and to the change in structural arrangement with varying glass composition.|
|Appears in Collections:||IJPAP Vol.46(04) [April 2008]|
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|IJPAP 46(4) (2008) 225-238.pdf||323.13 kB||Adobe PDF||View/Open|
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