Layering of magnetic nanoparticles at amorphous magnetic templates with perpendicular anisotropy.

Autor:	Saini A; Department for Physics and Astronomy, Uppsala University, Lägerhyddsvägen 1, 752 37 Uppsala, Sweden. max.wolff@physics.uu.se., Borchers JA; NIST Center for Neutron Research, 100 Bureau Drive, Gaithersburg, 20899-6102, USA., George S; Department for Physics and Astronomy, Uppsala University, Lägerhyddsvägen 1, 752 37 Uppsala, Sweden. max.wolff@physics.uu.se., Maranville BB; NIST Center for Neutron Research, 100 Bureau Drive, Gaithersburg, 20899-6102, USA., Krycka KL; NIST Center for Neutron Research, 100 Bureau Drive, Gaithersburg, 20899-6102, USA., Dura JA; NIST Center for Neutron Research, 100 Bureau Drive, Gaithersburg, 20899-6102, USA., Theis-Bröhl K; University of Applied Sciences Bremerhaven, An der Karlstadt 8, 27568 Bremerhaven, Germany., Wolff M; Department for Physics and Astronomy, Uppsala University, Lägerhyddsvägen 1, 752 37 Uppsala, Sweden. max.wolff@physics.uu.se.
Jazyk:	angličtina
Zdroj:	Soft matter [Soft Matter] 2020 Aug 26; Vol. 16 (33), pp. 7676-7684.
DOI:	10.1039/d0sm01088j
Abstrakt:	We reveal the assembly of magnetite nanoparticles of sizes 5 nm, 15 nm and 25 nm from dilute water-based ferrofluids onto an amorphous magnetic template with out-of-plane anisotropy. From neutron reflectometry experiments we extract density profiles and show that the particles self-assemble into layers at the magnetic surface. The layers are extremely stable against cleaning and rinsing of the substrate. The density of the layers is determined by and increases with the remanent magnetic moment of the particles.
Databáze:	MEDLINE
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