Coincidence of collective relaxation anomaly and specific heat peak in a bulk metallic glass-forming liquid

Abhishek Jaiswal, Andrey Podlesynak, Georg Ehlers, Rebecca Mills, Stephanie O'Keeffe, Joseph Stevick, James Kempton, Glenton Jelbert, Wojciech Dmowski, Konstantin Lokshin, Takeshi Egami, Yang Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

The study of relaxational behavior of multicomponent metallic liquids still holds the key to understanding and improving the glass-forming abilities of bulk metallic glasses. Herein, we report measurements of the collective relaxation times in a melted bulk metallic glass (LM601Zr51Cu36Ni4Al9) in the kinetic regime (Q: 1.5-4.0Å-1) using quasielastic neutron scattering. The results reveal an unusual slope change in the Angell plots of the collective relaxation time of this metallic liquid around 950 C, beyond the melting point of the material. Specific heat capacity measurement also reveals the presence of a peak around the same temperature. The coincidence is rationalized using Adams-Gibbs theory, and motivates more careful experimental and computational studies of the metallic liquids in the future.

Original languageEnglish (US)
Article number024202
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number2
DOIs
StatePublished - Jul 21 2015

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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