Table of Contents
ISRN Spectroscopy
Volume 2012 (2012), Article ID 634571, 7 pages
http://dx.doi.org/10.5402/2012/634571
Research Article

Spectroscopic and Physical Properties of B i 2 O 3 - B 2 O 3 -ZnO- L i 2 O Glasses

Department of Physics, Osmania University, Hyderabad, 500007, India

Received 7 December 2011; Accepted 18 January 2012

Academic Editor: M. Ivanda

Copyright Β© 2012 Shashidhar Bale and Syed Rahman. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Bismuth glasses containing ZnO and Li2O were prepared by conventional melt-quench technique. ZnO is gradually substituted by Li2O, and its effect on various physical, thermal, and electrical conduction properties was studied and analyzed. Raman studies revealed that these glasses are mainly made up of [BiO3] and [BiO6] units. The density decreases and molar volume increases with the incorporation of Li2O into these glasses. MDSC studies have been performed on these glasses to determine the glass transition temperature and other related thermal parameters such as change in the glass transition temperature ( Ξ” 𝑇 𝑔 ) and specific heat capacity difference ( Ξ” 𝐢 𝑝 ). These studies revealed that the glasses possess high 𝑇 𝑔 values, and 𝑇 𝑔 decreases with Li2O content. The trend of these properties is attributed to the changes in the glass network structure. Dc electrical conductivity revealed that the conductivity increases and activation energy decreases with Li2O content.