Solid State Science and Technology, Vol. 18, No 2 (2010) 84-90

 ISSN 0128-7389

 OPTICAL AND STRUCTURAL PROPERTIES OF

PbO-B2O3-TeO2 GLASSES

S.M. Iskandar1,2,, M.K. Halimah1, W.M. Daud1, H.A. A. Sidek1,

M.D. Khairul Zaman3

1Physics Department, Universiti Putra Malaysia,

43400 UPM Serdang, Selangor.

2School of Physics, Universiti Sains Malaysia, 1800 USM, Penang

3Radiation Processing Technology, Malaysian Nuclear Agency,

43000 Kajang, Selangor

 

ABSTRACT

Optical and structural properties of [TeO2]y [(B2O3)1-x (PbO)x]1-y glasses of different composition have been studied using UV-Vis, Raman and XRD spectroscopic techniques. The UV optical absorption was recorded at room temperature in the wavelength range of 200 to 800 nm, while the XRD patterns of as-received samples was verified at 2θ = (5 - 80 deg). Eventually, values of the optical energy gap are calculated and found to be dependent on the glass composition. Furthermore, the XRD diffractograms exhibit a wide smooth halo, which is a fingerprint of amorphous materials and some strong narrow diffraction lines corresponding to crystalline of α-TeO2. The Raman spectroscopy measurement shows strong existence of Pb group, O-B-O bending and O-Te-O stretching in lattice vibrations.

 

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