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@ARTICLE{Feygenson:8838,
author = {Feygenson, M. and Schweika, W. and Ioffe, A. and
Vakhrushev, S. B. and Brückel, T.},
title = {{M}agnetic phase transition in confined {M}n{O}
nanoparticles studied by polarized neutron scattering},
journal = {Physical review / B},
volume = {81},
number = {6},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-8838},
pages = {064423},
year = {2010},
note = {Record converted from VDB: 12.11.2012},
abstract = {We have investigated the magnetic ordering and the phase
transition in MnO nanoparticles confined in a porous glass
using polarized neutron scattering. These MnO nanoparticles
are best described as extended wormlike structures with a
mean diameter of 70 angstrom. We observe an apparent
continuous magnetic phase transition in MnO nanoparticles,
in contrast to the well-known discontinuous phase transition
in bulk MnO. By polarization analysis, separating the
magnetic scattering, it is found that within the individual
MnO nanoparticles about $60\%$ of atoms remain disordered in
the low-temperature limit, presumably due to interactions
between nanoparticles and glass walls. The continuous
character of the phase transition and the unusual
temperature dependence suggests a surface-induced disorder
phenomenon.},
keywords = {J (WoSType)},
cin = {IFF-4 / IFF-5 / Jülich Centre for Neutron Science JCNS
(JCNS) ; JCNS / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)VDB784 / I:(DE-Juel1)VDB785 /
I:(DE-Juel1)JCNS-20121112 / $I:(DE-82)080009_20140620$},
pnm = {BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung / Großgeräte für die Forschung
mit Photonen, Neutronen und Ionen (PNI)},
pid = {G:(DE-Juel1)FUEK505 / G:(DE-Juel1)FUEK415},
experiment = {EXP:(DE-MLZ)DNS-20140101},
shelfmark = {Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000274998100074},
doi = {10.1103/PhysRevB.81.064423},
url = {https://juser.fz-juelich.de/record/8838},
}