Voigtmann T, Meyer A, Holland-Moritz D, Stüber S, Hansen T, Unruh T (2008)
Publication Status: Published
Publication Type: Journal article
Publication year: 2008
Publisher: EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
Book Volume: 82
Journal Issue: 6
DOI: 10.1209/0295-5075/82/66001
The relation between static structure and dynamics as measured through the diffusion coefficients in viscous multicomponent metallic melts is elucidated by the example of the binary alloy Zr(64)Ni(36), by a combination of neutron-scattering experiments and mode-coupling theory of the glass transition. Comparison with a hard-sphere mixture shows that the relation between the different self diffusion coefficients strongly depends on chemical short-range ordering. For the Zr-Ni example, the theory predicts both diffusivities to be practically identical. The kinetics of concentration fluctuations is dramatically slower than that of self-diffusion, but the overall interdiffusion coefficient is equally large or larger due to a purely thermodynamic prefactor. This result is a general feature for non-demixing dense melts, irrespective of chemical short-range order. Copyright (C) EPLA, 2008.
APA:
Voigtmann, T., Meyer, A., Holland-Moritz, D., Stüber, S., Hansen, T., & Unruh, T. (2008). Atomic diffusion mechanisms in a binary metallic melt. EPL - Europhysics Letters, 82(6). https://dx.doi.org/10.1209/0295-5075/82/66001
MLA:
Voigtmann, Thomas, et al. "Atomic diffusion mechanisms in a binary metallic melt." EPL - Europhysics Letters 82.6 (2008).
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