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@ARTICLE{SchmitzAntoniak:842579,
author = {Schmitz-Antoniak, Carolin and Schmitz, Detlef and Warland,
Anne and Darbandi, Masih and Haldar, Soumyajyoti and
Bhandary, Sumanta and Sanyal, Biplab and Eriksson, Olle and
Wende, Heiko},
title = {{S}uppression of the {V}erwey {T}ransition by {C}harge
{T}rapping},
journal = {Annalen der Physik},
volume = {530},
number = {3},
issn = {0003-3804},
address = {Berlin},
publisher = {Wiley-VCH},
reportid = {FZJ-2018-00792},
pages = {1700363},
year = {2018},
note = {Online First},
abstract = {The Verwey transition in Fe3O4 nanoparticles with a mean
diameter of 6.3 nm is suppressed after capping the particles
with a 3.5 nm thick shell of SiO2. By X‐ray absorption
spectroscopy and its associated X‐ray magnetic circular
dichroism this suppression can be correlated to localized
Fe2+ states and a reduced double exchange visible in
different site‐specific magnetization behavior in high
magnetic fields. The results are discussed in terms of
charge trapping at defects in the Fe3O4/ SiO2 interface and
the consequent difficulties in the formation of the common
phases of Fe3O4. By comparison to X‐ray absorption spectra
of bare Fe3O4 nanoparticles in course of the Verwey
transition, particular changes in the spectral shape could
be correlated to changes in the number of unoccupied d
states for Fe ions at different lattice sites. These
findings are supported by density functional theory
calculations.},
cin = {PGI-6},
ddc = {530},
cid = {I:(DE-Juel1)PGI-6-20110106},
pnm = {522 - Controlling Spin-Based Phenomena (POF3-522)},
pid = {G:(DE-HGF)POF3-522},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000428350500010},
doi = {10.1002/andp.201700363},
url = {https://juser.fz-juelich.de/record/842579},
}