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Title: Onset of Cooperative Dynamics in an Equilibrium Glass-Forming Metallic Liquid

Journal Article · · Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry
 [1];  [2];  [3];  [3];  [3];  [4];  [4];  [2];  [4];  [5]
  1. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States). Dept. of Nuclear, Plasma and Radiological Engineering
  2. Liquidmetal Technologies Inc., Santa Margarita, CA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering, Dept. of Physics and Astronomy
  5. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States). Dept. of Nuclear, Plasma and Radiological Engineering; Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States). Dept. of Materials Science and Engineering

Onset of cooperative dynamics has been observed in many molecular liquids, colloids, and granular materials in the metastable regime on approaching their respective glass or jamming transition points, and is considered to play a significant role in the emergence of the slow dynamics. However, the nature of such dynamical cooperativity remains elusive in multicomponent metallic liquids characterized by complex many-body interactions and high mixing entropy. Herein, we report evidence of onset of cooperative dynamics in an equilibrium glass-forming metallic liquid (LM601: Zr51Cu36Ni4Al9). This is revealed by deviation of the mean effective diffusion coefficient from its high-temperature Arrhenius behavior below TA ≈ 1300 K, i.e., a crossover from uncorrelated dynamics above TA to landscape-influenced correlated dynamics below TA. Moreover, the onset/ crossover temperature TA in such a multicomponent bulk metallic glass-forming liquid is observed at approximately twice of its calorimetric glass transition temperature (Tg ≈ 697 K) and in its stable liquid phase, unlike many molecular liquids.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; SC0014804
OSTI ID:
1328272
Journal Information:
Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry, Vol. 120, Issue 6; ISSN 1520-6106
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (2)

Chemical effect on the structural and dynamical properties in Zr-Ni-Al liquids journal September 2019
Spatial and thermal signatures of α and β relaxations in glassy and glacial aliphatic ionic liquids journal April 2019

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