| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Opel, Matthias
Bavarian Academy of Sciences and Humanities
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2021Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS-b-PMMA and Strontium Hexaferrite Magnetic Nanoplateletscitations
- 2021Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS- b -PMMA and Strontium Hexaferrite Magnetic Nanoplateletscitations
- 2020Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted Y3Fe5O12/Pt bilayerscitations
- 2020Surface distortion of Fe dot-decorated TiO2 nanotubular templates using time-of-flight grazing incidence small angle scatteringcitations
- 2020Self-Assembly of Large Magnetic Nanoparticles in Ultrahigh Molecular Weight Linear Diblock Copolymer Filmscitations
- 2020Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y$_{3}$Fe$_{5}$O$_{12}$ and inverted Y$_{3}$Fe$_{5}$O$_{12}$/Pt bilayerscitations
- 2019Spray‐Coating Magnetic Thin Hybrid Films of PS‐ b ‐PNIPAM and Magnetite Nanoparticlescitations
- 2019Spray‐Coating Magnetic Thin Hybrid Films of PS‐<i>b</i>‐PNIPAM and Magnetite Nanoparticlescitations
- 2019Printed Thin Diblock Copolymer Films with Dense Magnetic Nanostructurecitations
- 2018Printed Thin Magnetic Films Based on Diblock Copolymer and Magnetic Nanoparticlescitations
- 2018Magnetic nanoparticle-containing soft–hard diblock copolymer films with high ordercitations
- 2018Structural and magnetic properties of cobalt iron disulfide (CoxFe1−xS2) nanocrystalscitations
- 2016Impact of the interface quality on the spin Hall magnetoresistance in Pt/YIG hybrids
- 2015Arrangement of Maghemite Nanoparticles via Wet Chemical Self-Assembly in PS- b -PNIPAM Diblock Copolymer Filmscitations
- 2014Zinc oxide : From dilute magnetic doping to spin transportcitations
- 2014Nano- and Microstructures of Magnetic Field-Guided Maghemite Nanoparticles in Diblock Copolymer Filmscitations
- 2014Self-Assembly of Diblock Copolymer–Maghemite Nanoparticle Hybrid Thin Filmscitations
- 2013Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybridscitations
- 2009Voltage controlled inversion of magnetic anisotropy in a ferromagnetic thin film at room temperaturecitations
Places of action
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article
Nano- and Microstructures of Magnetic Field-Guided Maghemite Nanoparticles in Diblock Copolymer Films
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.