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Study of glass transition kinetics of As2S3 and As2Se3 by ultrafast differential scanning calorimetry |
Fan Zhang(张凡)1, Yimin Chen(陈益敏)1,2, Rongping Wang(王荣平)1, Xiang Shen(沈祥)1, Junqiang Wang(王军强)3,4, Tiefeng Xu(徐铁峰)1 |
1 Laboratory of Infrared Material and Devices & Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province, Advanced Technology Research Institute, Ningbo University, Ningbo 315211, China;
2 Department of Microelectronic Science and Engineering, Faculty of Science, Ningbo University, Ningbo 315211, China;
3 CAS Key Laboratory of Magnetic Materials and Devices & Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences(CAS), Ningbo 315201, China;
4 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Ultrafast differential scanning calorimetry (DSC) was employed to investigate the glass transition kinetics of As2S3 and As2Se3. By using the Arrhenius method, a fragility index of~22 can be estimated in both As2S3 and As2Se3. However, when the scanning rate is more than 200 K…-1, non-Arrhenius behavior can be observed in such “strong” liquids where the Vogel-Fulcher method is more accurate to describe the glass transition kinetics. The fragilities of As2S3 and As2Se3 glasses are thus extrapolated as 28.3±1.94 and 23.7±1.80, respectively. This indicates that, As2Se3 glass has a better structural stability and it is a better candidate for device applications.
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Received: 27 December 2018
Revised: 29 January 2019
Accepted manuscript online:
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PACS:
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78.55.Qr
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(Amorphous materials; glasses and other disordered solids)
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64.70.P-
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(Glass transitions of specific systems)
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61.43.Fs
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(Glasses)
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Corresponding Authors:
Yimin Chen, Junqiang Wang
E-mail: chenyimin@nbu.edu.cn;jqwang@nimte.ac.cn
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Cite this article:
Fan Zhang(张凡), Yimin Chen(陈益敏), Rongping Wang(王荣平), Xiang Shen(沈祥), Junqiang Wang(王军强), Tiefeng Xu(徐铁峰) Study of glass transition kinetics of As2S3 and As2Se3 by ultrafast differential scanning calorimetry 2019 Chin. Phys. B 28 047802
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