Volume 4 Number 2 (Mar. 2014)
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IJAPM 2014 Vol.4(2): 139-143 ISSN: 2010-362X
DOI: 10.7763/IJAPM.2014.V4.271

Thermal and Optical Studies of Rare Earth Doped Tungston–Tellurite Glasses

D. Sushama and P. Predeep

Abstract—The goal of this work is to prepare and characterize rare earth doped Tungston- Tellurite glasses. Tellurite glasses are well known for their use in optical fibre communication system, device technology etc. These glasses are stable at room temperature, and have good thermal, mechanical and optical properties.Er2O3 and Gd2O3 doped TeO2-WO3-La2O3 and TeO2-WO3 –PbO glasses are prepared from high purity oxides mixtures, melting in an alumina crucible in air atmosphere. Differential Scanning Calorimetry is used to study the thermal stability of the glass systems and UV/Vis/NIR spectroscopy is used to study the optical properties of the glasses. The glass transition temperature, Crystallization temperature, melting temperature and the variation in the optical band gap, and refractive index of these samples are calculated with the addition of Er2O3 and Gd2O3.

Index Terms—Tellurite glasses, thermal stability, optical band gap, non bridging oxygen.

D. Sushama is now with the LAMP, Department of Physics, NIT, Calicut, Kerala, India, on Deputation from the Department of Physics, M.S.M. College, Kayamkulam, Kerala, I ndia (e-mail: sushasukumar@gmail.com).

 

Cite: D. Sushama and P. Predeep, "Thermal and Optical Studies of Rare Earth Doped Tungston–Tellurite Glasses," International Journal of Applied Physics and Mathematics vol. 4, no. 2, pp. 139-143, 2014.

General Information

ISSN: 2010-362X (Online)
Abbreviated Title: Int. J. Appl. Phys. Math.
Frequency: Quarterly
DOI: 10.17706/IJAPM
Editor-in-Chief: Prof. Haydar Akca 
Abstracting/ Indexing: INSPEC(IET), CNKI, Google Scholar, EBSCO, Chemical Abstracts Services (CAS), etc.
E-mail: ijapm@iap.org
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