Self- and interdiffusion in dilute liquid germanium-based alloys

Weis H, Kargl F, Kolbe M, Koza MM, Unruh T, Meyer A (2019)


Publication Type: Journal article

Publication year: 2019

Journal

Book Volume: 31

Pages Range: 455101

Journal Issue: 45

DOI: 10.1088/1361-648X/ab354e

Abstract

Self- and inter-diffusion coefficients in liquid Ge and dilute Ge-based Ge-Si, Ge-Au, Ge-In, Ge-Ce and Ge-Gd alloys-containing 2 at% additions, respectively, are measured using a comprehensive approach of measuring techniques: quasi-elastic neutron scattering, in situ long-capillary experiments combined with x-ray radiography, and a long-capillary experiment under microgravity conditions. Resulting inter-and Ge self-diffusion coefficients are equal within error bars for each investigated alloy. The interdiffusion coefficients are smaller for the alloys containing Ce and Gd, However, no dependence of the atomic mass of the minor additions, that varies by about a factor of seven between Si and Au, on the diffusion coefficients could be observed. This demonstrates that in a loosely-packed metallic liquid with fast diffusive dynamics the diffusion mechanism is highly collective in nature.

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APA:

Weis, H., Kargl, F., Kolbe, M., Koza, M.M., Unruh, T., & Meyer, A. (2019). Self- and interdiffusion in dilute liquid germanium-based alloys. Journal of Physics: Condensed Matter, 31(45), 455101. https://dx.doi.org/10.1088/1361-648X/ab354e

MLA:

Weis, H., et al. "Self- and interdiffusion in dilute liquid germanium-based alloys." Journal of Physics: Condensed Matter 31.45 (2019): 455101.

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