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

Meyer A, Stüber S, Holland-Moritz D, Heinen O, Unruh T (2008)

Publication Status: Published

Publication Type: Journal article

Publication year: 2008

Journal

Physical Review B American Physical Society

Publisher: AMER PHYSICAL SOC

Book Volume: 77

Journal Issue: 9

DOI: 10.1103/PhysRevB.77.092201

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.

Authors with CRIS profile

Tobias Unruh Professur für Nanomaterialcharakterisierung (Streumethoden)

Involved external institutions

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE) Technische Universität München (TUM) DE Germany (DE)

How to cite

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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