Study of Crystallization Kinetics of TeO₂-Na₂O-MgO Glass Using Ozawa Method: Influence of Europium

Abstract:

. The study of the crystallization kinetics of rare-earth doped glass stimulated much interest especially for crystallization process. In this work transparent Eu2O3 doped glasses with composition TeO2 - Na2O – MgO were prepared using conventional melt-quenching technique. The amorphous nature of glass was confirmed using X-ray diffraction method. The influence of Eu3+ content on the crystallization kinetics of the glass such as activation energy (Ea) was thoroughly evaluated under non-isothermal conditions using DTA. The crystallization kinetic at different heating rate from 5 °C min-1 to 25 °C min-1 at different crystallization temperature (Tp) were examined and verified using Ozawa method. The result showed that the activation energy (Ea) was decreased with the increasing of the dopant concentration from 319.8 eV to 93.5 eV.

• Periodical: Advanced Materials Research (Volume 501)
• Pages: 116-120
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.501.116
• Online since: April 2012
• Authors: Ezza Syuhada Sazali, M. Rahim Sahar, Nur Amanina Mat Jan, Khaidzir Hamzah, Ramli Arifin
• Keywords: Avrami Exponent, Crystallization Kinetics, Ozawa Method

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