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Journal of Materials Science
Published in: Journal of Materials Science 9/2012

01-05-2012

Grain boundary self-diffusion in Fe films with a stable nanostructure

Authors: H. Schmidt, S. Chakravarty, M. Jiang, E. Hüger, P. K. Parida, T. Geue, J. Stahn, U. Tietze, D. Lott

Published in: Journal of Materials Science | Issue 9/2012

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Abstract

Grain boundary self-diffusion in Type-C regime was investigated in nano-crystalline bcc iron at low temperatures between 100 and 250 °C using neutron reflectometry in combination with [natFe(7 nm)/57Fe(3 nm)]10 isotope multilayers. The method allows to determine diffusivities in a stable nanostructure without concurrent grain growth. An activation enthalpy of diffusion of (0.9 ± 0.3) eV is found, comparable to the value of coarse-grained Fe.
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Metadata
Title
Grain boundary self-diffusion in Fe films with a stable nanostructure
Authors
H. Schmidt
S. Chakravarty
M. Jiang
E. Hüger
P. K. Parida
T. Geue
J. Stahn
U. Tietze
D. Lott
Publication date
01-05-2012
Publisher
Springer US
Published in
Journal of Materials Science / Issue 9/2012
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-012-6262-0

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