Nowak, Benedikt and Holland-Moritz, Dirk and Yang, Fan and Voigtmann, Thomas and Kordel, Tobias and Hansen, T.C. and Meyer, Andreas (2017) Partial structure factors reveal atomic dynamics in metallic alloy melts. Physical Review Materials, 1 (2), 025603. American Physical Society. doi: 10.1103/PhysRevMaterials.1.025603. ISSN 2475-9953.
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Official URL: https://doi.org/10.1103/PhysRevMaterials.1.025603
Abstract
We investigate the dynamical decoupling of the diffusion coefficients of the different components in a metallic alloy melt, using a combination of neutron diffraction, isotopic substitution, and electrostatic levitation in Zr-Ni melts. We show that excess Ni atoms can diffuse more freely in a background of saturated chemical interaction, causing their dynamics to become much faster and thus decoupled than anticipated from the interparticle interactions. Based on the mode-coupling theory of the glass transition, the averaged structure as given by the partial static structure factors is able to explain the observed dynamical behavior.
Item URL in elib: | https://elib.dlr.de/113917/ | ||||||||||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||||||||||
Title: | Partial structure factors reveal atomic dynamics in metallic alloy melts | ||||||||||||||||||||||||||||||||
Authors: |
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Date: | 24 July 2017 | ||||||||||||||||||||||||||||||||
Journal or Publication Title: | Physical Review Materials | ||||||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||||||
Volume: | 1 | ||||||||||||||||||||||||||||||||
DOI: | 10.1103/PhysRevMaterials.1.025603 | ||||||||||||||||||||||||||||||||
Page Range: | 025603 | ||||||||||||||||||||||||||||||||
Publisher: | American Physical Society | ||||||||||||||||||||||||||||||||
ISSN: | 2475-9953 | ||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||
Keywords: | glass-forming metallic melts, diffusion, structural properties, neutron diffraction, mode-coupling theory | ||||||||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||||||||||||||
HGF - Program Themes: | Research under Space Conditions | ||||||||||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||||||||||
DLR - Program: | R FR - Research under Space Conditions | ||||||||||||||||||||||||||||||||
DLR - Research theme (Project): | R - Material Design and New Materials | ||||||||||||||||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Materials Physics in Space | ||||||||||||||||||||||||||||||||
Deposited By: | Nowak, Benedikt | ||||||||||||||||||||||||||||||||
Deposited On: | 18 Sep 2017 12:58 | ||||||||||||||||||||||||||||||||
Last Modified: | 27 Nov 2023 11:48 |
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