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@ARTICLE{Paul:201068,
author = {Paul, Amitesh and Paul, N. and Jutimoosik, Jaru and
Yimnirun, Rattikorn and Rujirawat, Saroj and Höpfner,
Britta and Lauermann, Iver and Lux-Steiner, M. and Mattauch,
Stefan and Böni, Peter},
title = {{C}hange in interface magnetism of an exchange-coupled
system due to the presence of nonmagnetic spacers},
journal = {Physical review / B},
volume = {87},
number = {1},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2015-03378},
pages = {014431},
year = {2013},
abstract = {We report on the effect of nonmagnetic spacer layers on the
interface magnetism and the exchange bias in the
archetypical [Co/CoO]16 system. The separation of the
magnetic bilayers by Au layers with various thicknesses
dAu≥25 nm leads to a threefold increase of the exchange
bias field (Heb). Reflectometry with polarized neutrons does
not reveal any appreciable change in the domain population.
This result is in agreement with the observation that the
granular microstructure within the [Co/CoO] bilayers is
independent of dAu. The significant reduction of the
magnetic moments in the Co layers can be attributed to
interfacial disorder at the Co-Au interfaces.
Element-specific x-ray absorption spectroscopy attributes
part of the enhancement of Heb to the formation of Co3O4 in
the [Co/CoO] bilayers within the multilayers. A considerable
proportion of the increase of Heb can be attributed to the
loss of magnetization at each of the Co-Au interfaces with
increasing dAu. We propose that the interfacial magnetism of
ferro- and antiferromagnetic layers can be significantly
altered by means of metallic spacer layers thus affecting
the exchange bias significantly. This study shows that the
magnetism in magnetic multilayers can be engineered by
nonmagnetic spacer layers without involving the
microstructure of the individual layers.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
IKP-1},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)IKP-1-20111104},
pnm = {54G - JCNS (POF2-54G24)},
pid = {G:(DE-HGF)POF2-54G24},
experiment = {EXP:(DE-MLZ)TREFF-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000314092800004},
doi = {10.1103/PhysRevB.87.014431},
url = {https://juser.fz-juelich.de/record/201068},
}