In situ neutron scattering studies of a liquid-liquid phase transition in the supercooled liquid of a Zr-Cu-Al-Ag glass-forming alloy

Weixia Dong; Zhenduo Wu; Jiacheng Ge; Sinan Liu; Si Lan; Elliot Paul Gilbert; Yang Ren; Dong Ma; Xun Li Wang

doi:10.1063/5.0048486

In situ neutron scattering studies of a liquid-liquid phase transition in the supercooled liquid of a Zr-Cu-Al-Ag glass-forming alloy

Weixia Dong
, Zhenduo Wu^*
, Jiacheng Ge
, Sinan Liu
, Si Lan^*
, Elliot Paul Gilbert
, Yang Ren
, Dong Ma
, Xun Li Wang

^*Corresponding author for this work

Nanjing University of Science and Technology
City University of Hong Kong
City University of Hong Kong Shenzhen Research Institute
Australian Nuclear Science and Technology Organisation
Argonne National Laboratory
Songshan Lake Materials Laboratory
Oak Ridge National Laboratory

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

The presence of a liquid-liquid phase transition in the supercooled-liquid temperature range for a glass-forming Zr-Cu-Al-Ag alloy has been revealed using a suite of in situ neutron scattering techniques, including small-angle neutron scattering (SANS) and total neutron scattering. The SANS data analysis is indicative of the enhancement of nanoscale structural heterogeneities prior to crystallization, which is further supported by the total scattering result that points to an increase in the degree of medium-range ordering during the transition. In addition, a calorimetric anomaly and abnormal thermal expansion behavior were also observed upon heating. As such, this study provides multiscale structural evidence on the liquid-liquid phase transition and helps to gain insight into its underlying mechanism in terms of cluster connectivity.

Original language	English
Article number	191901
Journal	Applied Physics Letters
Volume	118
Issue number	19
DOIs	https://doi.org/10.1063/5.0048486
State	Published - 10 May 2021
Externally published	Yes

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title = "In situ neutron scattering studies of a liquid-liquid phase transition in the supercooled liquid of a Zr-Cu-Al-Ag glass-forming alloy",

abstract = "The presence of a liquid-liquid phase transition in the supercooled-liquid temperature range for a glass-forming Zr-Cu-Al-Ag alloy has been revealed using a suite of in situ neutron scattering techniques, including small-angle neutron scattering (SANS) and total neutron scattering. The SANS data analysis is indicative of the enhancement of nanoscale structural heterogeneities prior to crystallization, which is further supported by the total scattering result that points to an increase in the degree of medium-range ordering during the transition. In addition, a calorimetric anomaly and abnormal thermal expansion behavior were also observed upon heating. As such, this study provides multiscale structural evidence on the liquid-liquid phase transition and helps to gain insight into its underlying mechanism in terms of cluster connectivity.",

author = "Weixia Dong and Zhenduo Wu and Jiacheng Ge and Sinan Liu and Si Lan and Gilbert, \{Elliot Paul\} and Yang Ren and Dong Ma and Wang, \{Xun Li\}",

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doi = "10.1063/5.0048486",

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T1 - In situ neutron scattering studies of a liquid-liquid phase transition in the supercooled liquid of a Zr-Cu-Al-Ag glass-forming alloy

AU - Dong, Weixia

AU - Wu, Zhenduo

AU - Ge, Jiacheng

AU - Liu, Sinan

AU - Lan, Si

AU - Gilbert, Elliot Paul

AU - Ren, Yang

AU - Ma, Dong

AU - Wang, Xun Li

PY - 2021/5/10

Y1 - 2021/5/10

N2 - The presence of a liquid-liquid phase transition in the supercooled-liquid temperature range for a glass-forming Zr-Cu-Al-Ag alloy has been revealed using a suite of in situ neutron scattering techniques, including small-angle neutron scattering (SANS) and total neutron scattering. The SANS data analysis is indicative of the enhancement of nanoscale structural heterogeneities prior to crystallization, which is further supported by the total scattering result that points to an increase in the degree of medium-range ordering during the transition. In addition, a calorimetric anomaly and abnormal thermal expansion behavior were also observed upon heating. As such, this study provides multiscale structural evidence on the liquid-liquid phase transition and helps to gain insight into its underlying mechanism in terms of cluster connectivity.

AB - The presence of a liquid-liquid phase transition in the supercooled-liquid temperature range for a glass-forming Zr-Cu-Al-Ag alloy has been revealed using a suite of in situ neutron scattering techniques, including small-angle neutron scattering (SANS) and total neutron scattering. The SANS data analysis is indicative of the enhancement of nanoscale structural heterogeneities prior to crystallization, which is further supported by the total scattering result that points to an increase in the degree of medium-range ordering during the transition. In addition, a calorimetric anomaly and abnormal thermal expansion behavior were also observed upon heating. As such, this study provides multiscale structural evidence on the liquid-liquid phase transition and helps to gain insight into its underlying mechanism in terms of cluster connectivity.

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U2 - 10.1063/5.0048486

DO - 10.1063/5.0048486

M3 - 文章

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SN - 0003-6951

VL - 118

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 191901

ER -

In situ neutron scattering studies of a liquid-liquid phase transition in the supercooled liquid of a Zr-Cu-Al-Ag glass-forming alloy

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