title: Amorphous structures in the immiscible Ag-Ni system.
abstract: Vapor quenching in the phase-separating Ag-Ni system creates alloys that appear homogeneously amorphous under conventional probes. However, an atomic-level structural analysis based on extended x-ray absorption fine structures in combination with reverse Monte Carlo and molecular dynamics simulations demonstrates that these new phases are characterized by nonuniform, spinodal-like structures on an extremely fine scale. This heterogeneous nature of the structure is directly responsible for the unexpectedly low heat (and temperature) of crystallization observed in calorimetric measurements.
authors: Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA.
authors: J H
authors: JH
authors: He
authors: H W
authors: HW
authors: Sheng
authors: P J
authors: PJ
authors: Schilling
authors: C L
authors: CL
authors: Chien
authors: E
authors: E
authors: Ma