The Crystallization kinetics of chalcogenide glass M. 1. Abd-Elrahrnan '. I, A. A. Abu-Sehly', N. Afify', and G. Shuriet I Physics Department, Faculty of Science. Assiut University. Assiut 71516. Egypt Department of Science. Faculty of Education. Assiut University, New Valley Branch. New Valley. Egypt
Received 14 January 2002. revised 13 January 2003. accepted 7 February 2003 Published online 22 May 2003

PACS 61.10.Nz, 65.90.+i. 8140.Ef The crystallization kinetics of the Ge17.5 Te82.5 chalcogenide glass were obtained by using differential scanning calorimetry (DSC) under non- isothermal conditions. The fraction of crystallized material. calculated using the partial area analysis. revealed that the crystallization process of the Ge17.5 Te82.5, glass was two and three-dimensional. The crystallization of the Ge17.5 Te82.5 glass was confirmed by X-ray investigation of the as-prepared and annealed powder. The glass transition activation energy (Eol and the crystallization activation energy (E.) were calculated from the DSC thermograms using different methods.