Can two-dimensional confinement trigger the fragile-to-strong crossover in phase-change supercooled liquids

被引：5
|
作者：
Zhang, Qian [1 ,2 ]
Chen, Yimin [1 ,2 ,3 ]
Leng, Wenhao [1 ,2 ]
Gu, Jierong [1 ,2 ]
Mao, Yuanen [1 ,2 ]
Shen, Xiang [1 ,2 ]
Wang, Rongping [1 ,2 ]
Xu, Tiefeng [1 ,2 ]
Wang, Jun-Qiang [4 ,5 ]
Wang, Guoxiang [1 ,2 ]
机构：
[1] Ningbo Univ, Adv Technol Res Inst, Lab Infrared Mat & Devices, Ningbo 315211, Peoples R China
[2] Ningbo Univ, Adv Technol Res Inst, Key Lab Photoelect Mat & Devices Zhejiang Prov, Ningbo 315211, Peoples R China
[3] Ningbo Univ, Dept Microelect Sci & Engn, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China
[4] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China
[5] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China
来源：
SCRIPTA MATERIALIA | 2021年 / 192卷
基金：
美国国家科学基金会;
关键词：
GeTe phase-change material; two-dimensional confinement; crystallization kinetics; fragile-to-strong crossover; COPPER SULFIDE; AB-INITIO; CUS; DIFFUSION; COVELLITE; STABILITY; ELECTRODE; DIGENITE; ABLATION;
D O I：
10.1016/j.scriptamat.2020.10.017
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Recent fragile-to-strong crossover (FSC) concept in the crystallization kinetics study of phase-change supercooled liquids (PCLs) is attractive for screening the high-performance phase-change materials. It is important to search the FSC behavior in confined PCLs, like the two-dimensional confined PCLs, which is believed has fast crystallization and good thermal stability. Together with the ultrafast differential scanning calorimetry measurement and the generalized Mauro-Yue-Ellison-Gupta-Allan viscosity model, we here studied the crystallization kinetics of two-dimensional confined GeTe PCLs. It was found such confined PCLs has distinct FSC with large crossover magnitude is 2, confirming two-dimensional confinement can trigger the FSC behavior in PCLs. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：89 / 99
页数：11
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