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@ARTICLE{Tober:877787,
author = {Tober, Steffen and Creutzburg, Marcus and Arndt, Björn and
Krausert, Konstantin and Mattauch, Stefan and Koutsioubas,
Alexandros and Pütter, Sabine and Mohd, Amir Syed and
Volgger, Lukas and Hutter, Herbert and Noei, Heshmat and
Vonk, Vedran and Lott, Dieter and Stierle, Andreas},
title = {{O}bservation of iron diffusion in the near-surface region
of magnetite at 470 {K}},
journal = {Physical review research},
volume = {2},
number = {2},
issn = {2643-1564},
address = {College Park, MD},
publisher = {APS},
reportid = {FZJ-2020-02454},
pages = {023406},
year = {2020},
abstract = {Experiments are reported, which allow us to quantify the
near-surface cation diffusion in (001) oriented Fe$_3$O$_4$
single crystals at temperatures between 470 and 770 K. Thin
homoepitaxial films of magnetite, grown using isotopically
labeled $^{57}$Fe, were investigated by neutron reflectivity
and time-of-flight secondary ion mass spectrometry. By
heating the thin films in high vacuum to different
temperatures for a well-defined time and determining the
${57}$ Fe distribution along the surface normal, the
diffusion lengths are obtained. For the investigated
temperature range, diffusion constants of the order of
10$^{−20}$ m$^2$/s are deduced. These results are
important in view of near-surface mass transport induced by
oxygen chemical potential differences occurring when
magnetite is exposed to different gas atmospheres or by
adsorbates.},
cin = {JCNS-FRM-II / JCNS-2 / MLZ},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-2-20110106 / I:(DE-588b)4597118-3},
pnm = {524 - Controlling Collective States (POF3-524) / 6G4 -
Jülich Centre for Neutron Research (JCNS) (POF3-623) / 6212
- Quantum Condensed Matter: Magnetism, Superconductivity
(POF3-621) / 6G15 - FRM II / MLZ (POF3-6G15)},
pid = {G:(DE-HGF)POF3-524 / G:(DE-HGF)POF3-6G4 /
G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6G15},
experiment = {EXP:(DE-MLZ)MBE-MLZ-20151210 / EXP:(DE-MLZ)MARIA-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000603643500003},
doi = {10.1103/PhysRevResearch.2.023406},
url = {https://juser.fz-juelich.de/record/877787},
}