Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS-b-PMMA and Strontium Hexaferrite Magnetic NanoplateletsClick to copy article linkArticle link copied!
- Wei CaoWei CaoPhysik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, GermanyMore by Wei Cao
- Shanshan YinShanshan YinPhysik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, GermanyMore by Shanshan Yin
- Martina PlankMartina PlankErnst-Berl-Institute for Technical and Macromolecular Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Straße 4, 64287 Darmstadt, GermanyMore by Martina Plank
- Andrei ChumakovAndrei ChumakovDeutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, GermanyMore by Andrei Chumakov
- Matthias OpelMatthias OpelBayerische Akademie der Wissenschaften, Walther-Meissner-Institut, Walther-Meissner-Straße 8, 85748 Garching, GermanyMore by Matthias Opel
- Wei ChenWei ChenPhysik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, GermanyMore by Wei Chen
- Lucas P. KreuzerLucas P. KreuzerPhysik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, GermanyMore by Lucas P. Kreuzer
- Julian E. HegerJulian E. HegerPhysik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, GermanyMore by Julian E. Heger
- Markus GalleiMarkus GalleiChair in Polymer Chemistry, Saarland University, Campus C4 2, 66123 Saarbrücken, GermanyMore by Markus Gallei
- Calvin J. BrettCalvin J. BrettDeutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, GermanyDepartment of Engineering Mechanics, KTH Royal Institute of Technology, Teknikringen 8, SE-100 44 Stockholm, SwedenWallenberg Wood Science Center, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, SwedenMore by Calvin J. Brett
- Matthias SchwartzkopfMatthias SchwartzkopfDeutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, GermanyMore by Matthias Schwartzkopf
- Artem A. EliseevArtem A. EliseevDepartment of Chemistry, Moscow State University, 119991 Moscow, RussiaMore by Artem A. Eliseev
- Evgeny O. AnokhinEvgeny O. AnokhinDepartment of Materials Science, Moscow State University, 119991 Moscow, RussiaMore by Evgeny O. Anokhin
- Lev A. TrusovLev A. TrusovDepartment of Chemistry, Moscow State University, 119991 Moscow, RussiaMore by Lev A. Trusov
- Stephan V. RothStephan V. RothDeutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, GermanyDepartment of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, SwedenMore by Stephan V. Roth
- Peter Müller-Buschbaum*Peter Müller-Buschbaum*Email: [email protected]Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, GermanyHeinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstraße 1, 85748 Garching, GermanyMore by Peter Müller-Buschbaum
Abstract
Spray deposition is a scalable and cost-effective technique for the fabrication of magnetic hybrid films containing diblock copolymers (DBCs) and magnetic nanoparticles. However, it is challenging to obtain spray-deposited anisotropic magnetic hybrid films without using external magnetic fields. In the present work, spray deposition is applied to prepare perpendicular anisotropic magnetic hybrid films by controlling the orientation of strontium hexaferrite nanoplatelets inside ultra-high-molecular-weight DBC polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) films. During spray deposition, the evolution of DBC morphology and the orientation of magnetic nanoplatelets are monitored with in situ grazing-incidence small-angle X-ray scattering (GISAXS). For reference, a pure DBC film without nanoplatelets is deposited with the same conditions. Solvent-controlled magnetic properties of the hybrid film are proven with solvent vapor annealing (SVA) applied to the final deposited magnetic films. Obvious changes in the DBC morphology and nanoplatelet localization are observed during SVA. The superconducting quantum interference device data show that ferromagnetic hybrid polymer films with high coercivity can be achieved via spray deposition. The hybrid films show a perpendicular magnetic anisotropy before SVA, which is strongly weakened after SVA. The spray-deposited hybrid films appear highly promising for potential applications in magnetic data storage and sensors.
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