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

页码：89 / 99

页数：11