Journal article

Publication year: 2017

Journal: Journal of Applied Physics

Volume number: 121

Issue number: 22

ISSN: 0021-8979

eISSN: 1089-7550

DOI Link: https://doi.org/10.1063/1.4983849

Publisher: American Institute of Physics

Abstract: 
By combining top-down lithographic techniques with the meniscus-force deposition method, hierarchical structures consisting of defined regular elements on length scales from a few tens of nanometers to millimeters can be assembled out of magnetic nanoparticles. Varying the size and shape of the regular elements and distance between them offers the possibility to study magnetic coupling phenomena on three different length scales. As an example, we study hierarchical arrangements of magnetite nanoparticles (Fe3O4) with a diameter of d=20 nm by ferromagnetic resonance measurements and demonstrate that the macroscopic properties of the structures are dominated by the assemblies of densely packed nanoparticles on the sub mu m scale rather than by the interactions between these assemblies which are arranged on a grid with mu m spacings or than by the macroscopic outer shape of the grid on the mm scale. Published by AIP Publishing.

Harvard Citation style: Fabian, A., Elm, M., Hofmann, D. and Klar, P. (2017) Hierarchical structures of magnetic nanoparticles for controlling magnetic interactions on three different length scales, Journal of Applied Physics, 121(22), Article 224303. https://doi.org/10.1063/1.4983849

APA Citation style: Fabian, A., Elm, M., Hofmann, D., & Klar, P. (2017). Hierarchical structures of magnetic nanoparticles for controlling magnetic interactions on three different length scales. Journal of Applied Physics. 121(22), Article 224303. https://doi.org/10.1063/1.4983849