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Faculty of Science and Arts - Khulais
Document Details
Document Type
:
Article In Journal
Document Title
:
Thermal stability and activation energy of some compositions of Ge-Te-Cu chalcogenide systemm
لثبات الحرارى وطاقة التنشيط لبعض مركبات النظام الجرمانيوم-تيليريوم - نحاس الشالكوجينى
Subject
:
Thermal analysis
Document Language
:
English
Abstract
:
The present study investigates the influence of copper addition on the thermal stability, and the activation energy of the glass transition and crystallization for Ge26Te74xCux (x¼2.5, 5, 7.5, 10 and 12.5 at%) glasses. Differential scanning calorimetric (DSC) results under non-isothermal conditions for the Ge–Te–Cu system are reported and discussed. From the heating rate () dependence of the glass transition temperature (Tg) and the temperature corresponding to the maximum crystallization rate (Tp), the activation energy for both glass transition and crystallization for the studied glasses were obtained. The glass-forming ability of the Ge26Te74xCux glasses was evaluated using various thermal stability criteria based on characteristic temperatures. The Kr(T ) criterion has also been considered for the evaluation of glass stability from DSC data. The activation energy for crystallization decreases and thermal stability increases with increasing copper content.
ISSN
:
6443-1478
Journal Name
:
Philosophical Magazine
Volume
:
88
Issue Number
:
16
Publishing Year
:
1429 AH
2008 AD
Article Type
:
Article
Added Date
:
Wednesday, December 29, 2010
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
كمال عبدالنبي علي
Ali, Kmal Abdualnabi
Researcher
Doctorate
Files
File Name
Type
Description
28378.pdf
pdf
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