Determination of self-diffusion coefficients by quasielastic neutron scattering measurements of levitated Ni droplets

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Meyer A, Stüber S, Holland-Moritz D, Heinen O, Unruh T
Zeitschrift: Physical Review B
Verlag: AMER PHYSICAL SOC
Jahr der Veröffentlichung: 2008
Band: 77
Heftnummer: 9
ISSN: 1098-0121


Abstract


Conventional techniques to measure diffusion coefficients in liquid metals and alloys are hampered by buoyancy-driven convective fluid flow and chemical reactions of the liquids with container material. To overcome these obstacles we combined containerless processing via electromagnetic levitation with quasielastic neutron scattering. This combination allowed us to study the atomic self-motion in liquid nickel within a broad temperature range from 200 K above to more than 200 K below the melting point, in the metastable regime of an undercooled melt. Other than in liquid Sn the temperature dependence of the Ni self-diffusion coefficient is well described with an Arrhenius law.



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)
Technische Universität München (TUM)


Zitierweisen

APA:
Meyer, A., Stüber, S., Holland-Moritz, D., Heinen, O., & Unruh, T. (2008). Determination of self-diffusion coefficients by quasielastic neutron scattering measurements of levitated Ni droplets. Physical Review B, 77(9). https://dx.doi.org/10.1103/PhysRevB.77.092201

MLA:
Meyer, Andreas, et al. "Determination of self-diffusion coefficients by quasielastic neutron scattering measurements of levitated Ni droplets." Physical Review B 77.9 (2008).

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