Kinetics of crystallization of Ge30-xSe70Sbx (x=15, 20, 25) chalcogenide glasses

被引：18

作者：

Kaswan, Anusaiya ^{[1
]}

Kumari, Vandana ^{[1
]}

Patidar, Dinesh ^{[1
]}

Saxena, Narendra Shai ^{[1
]}

Sharma, Kananbala ^{[1
]}

机构：

[1] Univ Rajasthan, Dept Phys, Semicond & Polymer Sci Lab, Jaipur 302004, Rajasthan, India

来源：

PROCESSING AND APPLICATION OF CERAMICS | 2014年 / 8卷 / 01期

关键词：

crystallization; activation energy; frequency factor; NONISOTHERMAL CRYSTALLIZATION; ACTIVATION-ENERGY;

D O I：

10.2298/PAC1401025K

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The kinetics of crystallization of Ge30-xSe70Sbx (x = 15, 20, 25) chalcogenide glasses has been investigated using differential scanning calorimetery at different heating rates under non-isothermal conditions. The kinetic analysis of crystallization has been discussed using different theoretical approaches such as Ozawa model, Augis and Bennet model, Matusita model and Gao-Wang model. It is evident from this study that the activation energy of crystallization E-c is composition dependent. The activation energy decreases with increasing Sb content due to the increasing of rate of crystallization. The minimum value of the frequency factor K-o, which is defined as the number of attempts made by the nuclei per second to overcome the energy barrier, confirms the fact that glass is more stable. It has been found that Ge15Se70Sb15 glass is more stable compared to the other compositions.

引用

页码：25 / 30

页数：6

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