Liquid-to-liquid crossover in the GaIn eutectic alloy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Q. Yu
  • X. D. Wang
  • Y. Su
  • Q. P. Cao
  • D. X. Zhang
  • J. Z. Jiang

Detail(s)

Original languageEnglish
Article number224203
Journal / PublicationPhysical Review B
Volume95
Issue number22
Publication statusPublished - 6 Jun 2017
Externally publishedYes

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.

Bibliographic Note

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Citation Format(s)

Liquid-to-liquid crossover in the GaIn eutectic alloy. / Yu, Q.; Wang, X. D.; Su, Y.; Cao, Q. P.; Ren, Y.; Zhang, D. X.; Jiang, J. Z.

In: Physical Review B, Vol. 95, No. 22, 224203, 06.06.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review