UV-IR spectra of new tellurite glasses

R. El-Mallawany; A. Abdel-Kader; M. El-Hawary; N. El-Khoshkhany

doi:10.1051/epjap:2002062

All issues

Volume 19 / No 3 (September 2002)

Eur. Phys. J. AP, 19 3 (2002) 165-172

Abstract

Issue		Eur. Phys. J. AP Volume 19, Number 3, September 2002


Page(s)		165 - 172
Section		Semiconductors and Devices
DOI		https://doi.org/10.1051/epjap:2002062
Published online		12 September 2002

Eur. Phys. J. AP 19, 165-172 (2002)
https://doi.org/10.1051/epjap:2002062

UV-IR spectra of new tellurite glasses

R. El-Mallawany, A. Abdel-Kader, M. El-Hawary and N. El-Khoshkhany

Physics Dept., Faculty of Science, Menofia Univ., Egypt

Corresponding author: relmallawany@hotmail.com

Received: 7 March 2002
Revised: 26 May 2002
Accepted: 7 June 2002
Published online: 12 September 2002

Abstract

Binary tellurite glass systems of the forms TeO₂(100−x)-xA_nO_m where A_nO_m = La₂O₃ or V₂O₅ and x = 5 to 20 for La₂O₃ and 10 to 50 for V₂O₅ were prepared. UV-spectra of these glasses were recorded in the range of 200–700 nm at room temperature. The optical energy gaps E_optical and $E_{\rm tail}$ have been calculated from the optical absorption edge. UV cut-off and IR cut-off have been measured. Calculations of the oxide ion average polarizability ( $\alpha_0^{2-}$ ) and optical basicity (Λ) have been done.

PACS: 61.43.Fs – Glasses / 74.25.Gz – Optical properties

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