The Cooperativity of Atomic Fluctuations in Highly Supercooled Glass-Forming Metallic Melts.

ABSTRACT: The behavior of supercooled glass-forming metals depends on the cooperative atomic fluctuations caused by dynamic heterogeneities in the melt. These spatial and temporal heterogeneities form dynamic clusters, which are regions of cooperative rearrangement (CRR). In this study, the macroscopic kinetics and the correlation length ξ, of the CRR, are derived for Pt_57.4Cu_14.7Ni_5.3P_22.6 and Pd₄₃Cu₂₇Ni₁₀P₂₀ metallic glass-formers by fast differential scanning calorimetry near the glass transition. While the alloy composition influences the α-relaxation and vitrification kinetics, typically defined by the glass transition, as well as the limiting temperature of the Vogel-Fulcher-Tammann-Hesse equation an

SUBMITTER: Schawe JEK 

PROVIDER: S-EPMC11789148 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature