文献类型：期刊文献

英文题名：Nonisothermal study on crystallization kinetics of GeSe2-As 2Se3-CdSe chalcogenide glasses by differential scanning calorimeter

作者：Zhao, Donghui[1]; Zhang, X.H.[1,2]; Xia, Fang[1]; Wang, Hua[1]; Ma, H.L.[2]; Adam, J.L.[2]; Chen, Guorong[1]

机构：[1] Institute of Inorganic Materials, School of Materials Science and Engineering, East China University of Science and Technology, 200237 Shanghai, China; [2] Laboratoire des Verres et Céramiques, Universite de Rennes I, 35042 Rennes Cedex, France

年份：2005

卷号：285

期号：1-2

起止页码：228

外文期刊名：Journal of Crystal Growth

收录：EI(收录号：2005449450278)

语种：英文

外文关键词：Activation energy - Crystal growth - Crystallization - Differential equations - Differential scanning calorimetry - Germanium compounds - Glass - Isotherms - Nucleation - Stability

摘要：A newly derived crystallization kinetics equation was presented for investigation on crystallization kinetics of 0.7GeSe2-(0.3-x) As 2Se3-xCdSe (x=0.1, 0.15 and 0.2) glasses under nonisothermal conditions. Activation energy (E) was calculated and compared with several previously reported kinetics equations. The calculated Avrami exponent (n) values were all equal to 3, implying the three-dimensional growth of crystals. Crystallization reaction rate function [k(t)] was introduced in the same equation to estimate glass stability, which was in a good agreement with the conventional indication by ΔT=Tp-Tg. The compositional dependence of E and k(t)s was discussed. ? 2005 Elsevier B.V. All rights reserved.