Self-diffusion of 3d transition metals in liquid silicon alloys

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autor(en): Pommrich I, Unruh T, Meyer A
Zeitschrift: High Temperatures-High Pressures
Jahr der Veröffentlichung: 2013
Band: 42
Heftnummer: 1
Seitenbereich: 49-55
ISSN: 0018-1544


Self-diffusion coefficients of titanium and cobalt in a silicon melt with 10 at.% metal content were measured in a temperature range between 180K above and below the liquidus temperature, respectively, with quasielastic neutron scattering. The chemical reactive melts were processed container-less by electromagnetic levitation. Whereas, in crystalline silicon self diffusion coefficients of Ti and Co impurities differ by more than 3 orders of magnitude close to the melting point, in the liquid state values of self-diffusion coefficients of Ti and Co, are equal within error bars and are of the order of 10(-8) m(2)/s. This is in line with a liquid-like, collective transport mechanism that is dominated by the mobility of the surrounding Si atoms.

FAU-Autoren / FAU-Herausgeber

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

Autor(en) der externen Einrichtung(en)
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)


Pommrich, I., Unruh, T., & Meyer, A. (2013). Self-diffusion of 3d transition metals in liquid silicon alloys. High Temperatures-High Pressures, 42(1), 49-55.

Pommrich, Ines, Tobias Unruh, and Andreas Meyer. "Self-diffusion of 3d transition metals in liquid silicon alloys." High Temperatures-High Pressures 42.1 (2013): 49-55.


Zuletzt aktualisiert 2018-10-08 um 15:38