A Simple Method for Crystallization Kinetics Determination and Its Application to Ge10Te35As55 Glass

✍ Scribed by Moharram, A. H. ;Rasheddy, M. S.

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 184 KB
• Volume: 169
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/(sici)1521-396x(199809)169:1<33::aid-pssa33>3.0.co;2-a

✦ Synopsis

The crystallization reaction of the Ge 10 Te 35 As 55 glass under non-isothermal conditions was studied. In the present work, a simple and approximation-free method has been developed and applied to obtain the crystallization kinetics from only one DSC curve. A comparison between the experimental curve and that calculated using the JMA equation supports the validity of the proposed method. In the investigated glass, the obtained values of crystallization energy E, Avrami exponent n, and frequency factor K 0 are (152.3 AE 1.9) kJ/mol, 2.0 AE 0.1, and (3.2 AE 1.1) 10 11 s ± ±1 , respectively. One-dimensional growth can be considered as the responsible crystallization mechanism.