Solid State Science and Technology, Vol. 15, No 1 (2007) 116-121
Corresponding Author: firstname.lastname@example.org
THERMAL STABILITY AND STRUCTURAL STUDIES IN THE
TeO2–ZnO–MgO–Li2O–Er2O3 GLASS SYSTEM
Sulhadi, M. R. Sahar, M. S. Rohani and R. Arifin
Advanced Optical Material Research Group, Faculty of Science,
Universiti Teknologi Malaysia, 81310 Skudai, Johor DT-Malaysia
Series of (80-x)TeO2-18ZnO-1MgO-1Li2O-xEr2O3 glass system (0.5mol%≤x≤ 2.5mol%) has successfully been made by melt quenching technique. The thermal stability and structure of glass has been investigated by means of TG/DTA and FTIR spectroscopy. The thermal parameters, such as the glass transition temperature (Tg), crystallization temperature (Tc) and thermal stability (Tc-Tg) were determined. It is found that this system provides a wide and stable glass formation in which the glass stability around 97oC-117oC may be obtained. The broad absorption peaks were
observed around 657cm-1-671cm-1 and 755cm-1-758cm-1, which correspond to the stretching vibration mode of TeO4 tbp and TeO3 tp, respectively. The absorption peaks around 1600cm-1 and 3400cm-1 are assigned to a stretching vibration of the hydroxyl group participating in the strong metal and hydrogen bonding respectively.
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