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Title: Liquid-to-liquid crossover in the GaIn eutectic alloy

Abstract

Liquid-liquid crossover is promising and closely related to the atomic dynamics during heating and cooling processes. Here we reveal a reversible structural crossover in the liquid Ga85.8In14.2 eutectic alloys by using in situ synchrotron x-ray diffraction and ab initio molecular dynamics simulation. A kink always appears on the temperature dependent behaviors of density, ratio of the second peak position to the first in the pair correlation function, coordination number, heat capacity, free energy, and atomic diffusivity in the temperature range of about 400–550 K. It is likely ascribed to atomic rearrangements of Ga and In atoms from a relative random packing at high temperatures to a relative nonuniform packing at low temperatures, in which In atoms prefer to have more In neighbors. This observation will promote more understanding of the liquid structure of eutectic alloys

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Key Research and Development Program of China; Fundamental Research Funds for the Central Universities; National Natural Science Foundation of China (NNSFC); USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division
OSTI Identifier:
1392447
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 95; Journal Issue: 22
Country of Publication:
United States
Language:
English

Citation Formats

Yu, Q., Wang, X. D., Su, Y., Cao, Q. P., Ren, Y., Zhang, D. X., and Jiang, J. Z. Liquid-to-liquid crossover in the GaIn eutectic alloy. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.95.224203.
Yu, Q., Wang, X. D., Su, Y., Cao, Q. P., Ren, Y., Zhang, D. X., & Jiang, J. Z. Liquid-to-liquid crossover in the GaIn eutectic alloy. United States. doi:10.1103/PhysRevB.95.224203.
Yu, Q., Wang, X. D., Su, Y., Cao, Q. P., Ren, Y., Zhang, D. X., and Jiang, J. Z. Thu . "Liquid-to-liquid crossover in the GaIn eutectic alloy". United States. doi:10.1103/PhysRevB.95.224203.
@article{osti_1392447,
title = {Liquid-to-liquid crossover in the GaIn eutectic alloy},
author = {Yu, Q. and Wang, X. D. and Su, Y. and Cao, Q. P. and Ren, Y. and Zhang, D. X. and Jiang, J. Z.},
abstractNote = {Liquid-liquid crossover is promising and closely related to the atomic dynamics during heating and cooling processes. Here we reveal a reversible structural crossover in the liquid Ga85.8In14.2 eutectic alloys by using in situ synchrotron x-ray diffraction and ab initio molecular dynamics simulation. A kink always appears on the temperature dependent behaviors of density, ratio of the second peak position to the first in the pair correlation function, coordination number, heat capacity, free energy, and atomic diffusivity in the temperature range of about 400–550 K. It is likely ascribed to atomic rearrangements of Ga and In atoms from a relative random packing at high temperatures to a relative nonuniform packing at low temperatures, in which In atoms prefer to have more In neighbors. This observation will promote more understanding of the liquid structure of eutectic alloys},
doi = {10.1103/PhysRevB.95.224203},
journal = {Physical Review B},
number = 22,
volume = 95,
place = {United States},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}