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Study of glass transition kinetics of As_2S_3 and As_2Se_3 by ultrafast differential scanning calorimetry 被引量:1
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作者 Fan Zhang Yimin Chen +3 位作者 Rongping Wang Xiang Shen Junqiang Wang Tiefeng Xu 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第4期349-352,共4页
Ultrafast differential scanning calorimetry(DSC) was employed to investigate the glass transition kinetics of As_2S_3 and As_2Se_3 . By using the Arrhenius method, a fragility index of~22 can be estimated in both As_... Ultrafast differential scanning calorimetry(DSC) was employed to investigate the glass transition kinetics of As_2S_3 and As_2Se_3 . By using the Arrhenius method, a fragility index of~22 can be estimated in both As_2S_3 and As_2Se_3 .However, when the scanning rate is more than 200 K·s^(-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 As_2S_3 and As_2Se_3 glasses are thus extrapolated as 28.3±1.94 and 23.7±1.80, respectively. This indicates that, As_2Se_3 glass has a better structural stability and it is a better candidate for device applications. 展开更多
关键词 ultrafast dsc glass TRANSITION KINETICS FRAGILITY index
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