Self- and interdiffusion in dilute liquid germanium-based alloys

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Weis H, Kargl F, Kolbe M, Koza MM, Unruh T, Meyer A
Zeitschrift: Journal of Physics: Condensed Matter
Jahr der Veröffentlichung: 2019
Band: 31
Heftnummer: 45
ISSN: 0953-8984
eISSN: 1361-648X


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.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)

Einrichtungen weiterer Autorinnen und Autoren

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Institute Laue-Langevin (ILL)


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).

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


Zuletzt aktualisiert 2019-06-09 um 13:23