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A structural signature of liquid fragility

Author

Listed:
  • N. A. Mauro

    (Lawrence University)

  • M. Blodgett

    (Washington University)

  • M. L. Johnson

    (Washington University)

  • A. J. Vogt

    (Washington University)

  • K. F. Kelton

    (Washington University)

Abstract

Virtually all liquids can be maintained for some time in a supercooled state, that is, at temperatures below their equilibrium melting temperatures, before eventually crystallizing. If cooled sufficiently quickly, some of these liquids will solidify into an amorphous solid, upon passing their glass transition temperature. Studies of these supercooled liquids reveal a considerable diversity in behaviour in their dynamical properties, particularly the viscosity. Angell characterized this in terms of their kinetic fragility. Previous synchrotron X-ray scattering studies have shown an increasing degree of short- and medium-range order that develops with increased supercooling. Here we demonstrate from a study of several metallic glass-forming liquids that the rate of this structural ordering as a function of temperature correlates with the kinetic fragility of the liquid, demonstrating a structural basis for fragility.

Suggested Citation

  • N. A. Mauro & M. Blodgett & M. L. Johnson & A. J. Vogt & K. F. Kelton, 2014. "A structural signature of liquid fragility," Nature Communications, Nature, vol. 5(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5616
    DOI: 10.1038/ncomms5616
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    Cited by:

    1. Sebastian A. Kube & Sungwoo Sohn & Rodrigo Ojeda-Mota & Theo Evers & William Polsky & Naijia Liu & Kevin Ryan & Sean Rinehart & Yong Sun & Jan Schroers, 2022. "Compositional dependence of the fragility in metallic glass forming liquids," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Atif Ansar & Bent Flyvbjerg & Alexander Budzier & Daniel Lunn, 2016. "Big is Fragile: An Attempt at Theorizing Scale," Papers 1603.01416, arXiv.org, revised Jun 2017.

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