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@ARTICLE{Yao:206541,
author = {Yao, Yuan and Metwalli, Ezzeldin and Niedermeier, Martin A.
and Opel, Matthias and Lin, Chen and Ning, Jing and Perlich,
Jan and Roth, Stephan and Müller-Buschbaum, Peter},
title = {{N}ano- and {M}icrostructures of {M}agnetic
{F}ield-{G}uided {M}aghemite {N}anoparticles in {D}iblock
{C}opolymer {F}ilms},
journal = {ACS applied materials $\&$ interfaces},
volume = {6},
number = {7},
issn = {1944-8252},
address = {Washington, DC},
publisher = {Soc.},
reportid = {PUBDB-2015-01005},
pages = {5244 - 5254},
year = {2014},
note = {(c) American Chemical Society. Post referee full text in
progress.},
abstract = {The control over the alignment of nanoparticles within a
block copolymer matrix was investigated for different
external magnetic fields with respect to producing
well-aligned, highly oriented metal-oxide–polymer
nanopatterns. Hybrid films were prepared by solution casting
under a range of external magnetic fields. The nano- and
microstructure of maghemite nanoparticles within
poly(styrene-b-methyl methacrylate) diblock copolymer films
as a function of the nanoparticle concentration was studied
using optical microscopy, atomic force microscopy, scanning
electron microscopy, and grazing incidence small-angle X-ray
scattering. Because of a polystyrene (PS) coating, the
nanoparticles are incorporated in the PS domains of the
diblock copolymer morphology. At higher nanoparticle
concentrations, nanoparticle aggregates perturb the block
copolymer structure and accumulate at the films surface into
wire-shaped stripes. These wire-shaped nanoparticle
aggregates form mainly because of the competition between
nanoparticle–polymer friction and magnetic dipolar
interaction. The magnetic behavior of the hybrid films was
probed at different temperatures for two orthogonal
directions (with the line-shaped particle aggregates
parallel and perpendicular to the magnetic field). The
hybrid film systems show superparamagnetic behavior and
remarkable shape anisotropy that render them interesting for
magnetic applications.},
cin = {DOOR / FS-PE},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-PE-20120731},
pnm = {DORIS Beamline BW4 (POF2-54G13) / FS-Proposal: II-20100012
(II-20100012)},
pid = {G:(DE-H253)POF2-BW4-20130405 / G:(DE-H253)II-20100012},
experiment = {EXP:(DE-H253)D-BW4-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000334572800081},
pubmed = {pmid:24621173},
doi = {10.1021/am500597t},
url = {https://bib-pubdb1.desy.de/record/206541},
}