Pressure-induced structural change in liquid GaIn eutectic alloy

Q. Yu, A. S. Ahmad, Kenny Ståhl, X. D. Wang, Y. Su, K. Glazyrin, H. P. Liermann, H. Franz, Q. P. Cao, D. X. Zhang, J. Z. Jiang

Research output: Contribution to journalJournal articleResearchpeer-review

301 Downloads (Pure)

Abstract

Synchrotron x-ray diffraction reveals a pressure induced crystallization at about 3.4 GPa and a polymorphic transition near 10.3 GPa when compressed a liquid GaIn eutectic alloy up to ~13 GPa at room temperature in a diamond anvil cell. Upon decompression, the high pressure crystalline phase remains almost unchanged until it transforms to the liquid state at around 2.3 GPa. The ab initio molecular dynamics calculations can reproduce the low pressure crystallization and give some hints on the understanding of the transition between the liquid and the crystalline phase on the atomic level. The calculated pair correlation function g(r) shows a non-uniform contraction reflected by the different compressibility between the short (1st shell) and the intermediate (2nd to 4th shells). It is concluded that the pressure-induced liquid-crystalline phase transformation likely arises from the changes in local atomic packing of the nearest neighbors as well as electronic structures at the transition pressure.
Original languageEnglish
Article number1139
JournalScientific Reports
Volume7
Number of pages11
ISSN2045-2322
DOIs
Publication statusPublished - 2017

Bibliographical note

This article is licensed under a Creative Commons Attribution 4.0 International License.

Fingerprint

Dive into the research topics of 'Pressure-induced structural change in liquid GaIn eutectic alloy'. Together they form a unique fingerprint.

Cite this