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Structural crossover in a supercooled metallic liquid and the link to a liquid-to-liquid phase transition

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Abstract

Time-resolved synchrotron measurements were carried out to capture the structure evolution of an electrostatically levitated metallic-glass-forming liquid during free cooling. The experimental data shows a crossover in the liquid structure at ∼1000 K, about 115 K below the melting temperature and 150 K above the crystallization temperature. The structure change is characterized by a dramatic growth in the extended-range order below the crossover temperature. Molecular dynamics simulations have identified that the growth of the extended-range order was due to an increased correlation between solute atoms. These results provide structural evidence for a liquid-to-liquid-phase-transition in the supercooled metallic liquid.
Original languageEnglish
Article number211907
Pages (from-to)1-5
JournalApplied Physics Letters
Volume108
Issue number21
DOIs
Publication statusPublished - 23 May 2016

Publisher's Copyright Statement

  • COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in S. Lan, M. Blodgett, K. F. Kelton, J. L. Ma, J. Fan, and X.-L. Wang , "Structural crossover in a supercooled metallic liquid and the link to a liquid-to-liquid phase transition", Appl. Phys. Lett. 108, 211907 (2016) and may be found at https://doi.org/10.1063/1.4952724.

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