TY  - CONF
AU  - Qdemat, Asmaa
AU  - Kentzinger, Emmanuel
AU  - Buitenhuis, Johan
AU  - Pütter, Sabine
AU  - Hussein, Mai
AU  - Bednarski-Meinke, Connie
AU  - Petracic, Oleg
AU  - Rücker, Ulrich
AU  - Brückel, Thomas
TI  - Magnetic Nanocaps: Impact of Curvature on Structural and Magnetic Properties of thin Films
M1  - FZJ-2024-05775
PY  - 2024
AB  - Magnetic nanocaps, formed by depositing Co/Pd multilayers on highly ordered arrays of silicananospheres, present a promising area of study due to their unique properties. This research focuseson fabricating and characterizing these nanocaps and comparing them to films deposited on flat silicon substrates. Using an advanced drop-casting method, we prepared two-dimensional arraysof silica nanospheres with diameters of 50 nm and 200 nm [1]. The curvature of these nanospheresinduced lateral variations in film thickness, affecting the material properties. Structural analysisusing X-ray reflectivity and Grazing Incidence Small Angle X-ray Scattering (GISAXS) revealed thecurvature-induced morphology. Magnetic measurements via SQUID indicated distinct properties, includinglow coercivity and altered anisotropy axis direction, compared to flat films. Depth-resolvedmagnetization profiles were determined using Polarized Neutron Reflectivity (PNR). Additionally,Grazing Incidence Small Angle Neutron Scattering (GISANS) was employed to investigate in-planelateral magnetic fluctuations. GISANS provided detailed information on the spatial distribution andcorrelations of magnetic domains within the nanocaps, revealing how the curvature and thicknessvariations influence magnetic interactions at the nanoscale. This comprehensive study correlatesthe magnetic and structural properties of thin films with varying thicknesses and nanosphere radii,enhancing our understanding of curvature’s impact on nanostructure formation and magnetic behavior,and guiding the design of functional magnetic materials for technological applications.References:[1] A. Qdemat, et.al., RSC Adv., 10, 2020
T2  - JCNS Workshop 2024, Trends and Perspectives in Neutron Scattering: Functional Interfaces
CY  - 8 Oct 2024 - 11 Oct 2024, Evangelische Akademie Tutzing (Germany)
Y2  - 8 Oct 2024 - 11 Oct 2024
M2  - Evangelische Akademie Tutzing, Germany
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/1031665
ER  -