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Titel: Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS-b-PMMA and Strontium Hexaferrite Magnetic Nanoplatelets
VerfasserIn: Cao, Wei
Yin, Shanshan
Plank, Martina
Chumakov, Andrei
Opel, Matthias
Chen, Wei
Kreuzer, Lucas P.
Heger, Julian E.
Gallei, Markus
Brett, Calvin J.
Schwartzkopf, Matthias
Eliseev, Artem A.
Anokhin, Evgeny O.
Trusov, Lev A
Roth, Stephan V.
Müller-Buschbaum, Peter
Sprache: Englisch
Titel: ACS applied materials & interfaces
Bandnummer: 13
Heft: 1
Startseite: 1592
Endseite: 1602
Verlag/Plattform: ACS
Erscheinungsjahr: 2020
Freie Schlagwörter: in situ GISAXS
spray deposition
ultra-high-molecular-weight diblock copolymer
magnetic nanoplatelets
ferromagnetic anisotropy
DDC-Sachgruppe: 540 Chemie
Dokumenttyp: Journalartikel / Zeitschriftenartikel
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.
DOI der Erstveröffentlichung: 10.1021/acsami.0c19595
URL der Erstveröffentlichung: https://pubs.acs.org/doi/10.1021/acsami.0c19595
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-371159
hdl:20.500.11880/33690
http://dx.doi.org/10.22028/D291-37115
ISSN: 1944-8252
1944-8244
Datum des Eintrags: 29-Aug-2022
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Chemie
Professur: NT - Prof. Dr. Markus Gallei
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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