High tolerance of proton irradiation of Ge₂Sb₂Te₅ phase change material

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• 作者：Dong Zhou ; Liangcai Wu ; Qi Guo ; Cheng Peng ; Chengfa He ; Zhitang Song ; Feng Rao ; Yudong Li ; Shanbin Xi
• 关键词：Phase change material ; Ge2Sb2Te5 ; Proton irradiation ; Radiation damage
• 刊名：Journal of Alloys and Compounds
• 出版年：2013
• 出版时间：25 October, 2013
• 年：2013
• 卷：575
• 期：Complete
• 页码：229-232
• 全文大小：1590 K

文摘

A chalcogenide material Ge₂Sb₂Te₅ was irradiated by proton and its radiation performance was investigated. The amorphous to crystalline transformation was studied by transmission electron microscopy observations and resistance measurements before and after irradiation. The results show that the crystallization behavior of the material has no obvious change after irradiation, proton irradiation did not induced transformation between crystalline and as-deposited amorphous state. Monte Carlo Simulation was used to analyze the process of ions transport in the phase change material. The irradiation results show that GST phase change material has excellent proton irradiation tolerance, which makes it attractive for space-based applications.