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Study of crystallization kinetics of Teo2-Na2O-Mgo glass using Ozawa method: influence of europium

Sazali, Ezza Syuhada and Sahar, Md. Rahim and Mat Jan, Nur Amanina and Hamzah, Khaidzir and Arifin, Ramli (2012) Study of crystallization kinetics of Teo2-Na2O-Mgo glass using Ozawa method: influence of europium. In: Solid State Science and Technology XXVI. Trans Tech Publications, Zurich, Switzerland, pp. 116-120. ISBN 978-303785402-0

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/AMR.5...

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 (E-a) was thoroughly evaluated under non-isothermal conditions using DTA. The crystallization kinetic at different heating rate from 5 degrees C min(-1) to 25 degrees C min(-1) at different crystallization temperature (T-p) were examined and verified using Ozawa method. The result showed that the activation energy (E-a) was decreased with the increasing of the dopant concentration from 319.8 eV to 93.5 eV.

Item Type:Book Section
Additional Information:Indexed by Web of Knowledge
Uncontrolled Keywords:crystallization kinetics, avrami exponent, Ozawa method
Subjects:Q Science
Divisions:Science
ID Code:36034
Deposited By: Fazli Masari
Deposited On:03 Dec 2013 16:32
Last Modified:04 Feb 2017 14:13

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