Fragile-to-strong crossover in optimized In-Sb-Te phase-change supercooled liquids
文献类型：期刊论文
| 作者 | Chen, Yimin; Gu, Jierong; Zhang, Qian; Mao, Yuanen; Wang, Guoxiang; Wang, Rongping; Shen, Xiang; Wang, Jun-Qiang; Xu, Tiefeng |
| 刊名 | PHYSICAL REVIEW MATERIALS
 |
| 出版日期 | 2020 |
| 卷号 | 4期号:3 |
| 关键词 | CRYSTALLIZATION KINETICS CHANGE NANOPARTICLES TRANSPORT-PROPERTIES STRONG TRANSITION THIN-FILMS X-RAY TEMPERATURE VISCOSITY DISORDER GROWTH |
| DOI | 10.1103/PhysRevMaterials.4.033403 |
| 英文摘要 | We have deposited In-doped SbxTey (x : y = 2 : 3, 1:1, 3:1, 4:1) phase-change films, and studied their physics properties like crystallization temperature, activation energy, and optical band gap. On the basis of these parameters, a balance between thermal stability and crystallization speed can be found when In content is 20 at. %. We thus further studied their crystallization kinetics using the flash differential scanning calorimetry and the generalized Mauro-Yue-Ellison-Gupta-Allan viscosity model to investigate the potential fragile-to-strong crossover (FSC) in In-20(Sb2Te3)(80), In-20(SbTe)(80), In20(Sb3Te)(80), and In-20(Sb4Te)(80) supercooled liquids. It was found that, In-20(Sb3Te)(80) has a large crossover magnitude (f) of 2.4 with a distinct FSC behavior, but its maximum crystal growth rate (U-max) of 0.047 m s(-1) is too low to satisfy the high-speed phase-change application. The crystal growth rate of In3SbTe2 (In51Sb17Te32) was found to be 0.08 m s(-1) without distinct FSC. In contrast, In-20(Sb4Te)(80) was demonstrated to have a larger Umax of 0.425 m s(-1) and a distinct FSC behavior with a f value of 2.6, which is larger than that of typical phase-change supercooled liquid Ag5.5In6.5Sb59Te29. The results strongly support that, obvious FSC is unique only in some phase-change supercooled liquids, but not a universal dynamic feature. |
| 学科主题 | Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19887]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Wang, RP (corresponding author), Ningbo Univ, Adv Technol Res Inst, Key Lab Photoelect Mat & Devices Zhejiang Prov, Ningbo 315211, Peoples R China. 2.Wang, RP (corresponding author), Ningbo Univ, Adv Technol Res Inst, Lab Infrared Mat & Devices, Ningbo 315211, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Chen, Yimin,Gu, Jierong,Zhang, Qian,et al. Fragile-to-strong crossover in optimized In-Sb-Te phase-change supercooled liquids[J]. PHYSICAL REVIEW MATERIALS,2020,4(3). |
| APA | Chen, Yimin.,Gu, Jierong.,Zhang, Qian.,Mao, Yuanen.,Wang, Guoxiang.,...&Xu, Tiefeng.(2020).Fragile-to-strong crossover in optimized In-Sb-Te phase-change supercooled liquids.PHYSICAL REVIEW MATERIALS,4(3). |
| MLA | Chen, Yimin,et al."Fragile-to-strong crossover in optimized In-Sb-Te phase-change supercooled liquids".PHYSICAL REVIEW MATERIALS 4.3(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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