Dipolar correlations in hexagonal and square arrays of magnetic nanoparticles
We propose to investigate the magnetic correlations of cobalt ferrite nanoparticles in two dimensional hexagonal and square arrays by polarized grazing incidence neutron scattering. The samples are prepared homogeneously by evaporation-induced self-assembly with close packed domains of long-range ordered particles across several micrometers and have been characterized by electron microscopy, macroscopic magnetization measurements, x-ray reflectometry and grazing incidence x-ray scattering. As a result of the experiment, we aim to observe for the first time emergent superferromagnetic and superantiferromagnetic states by polarized GISANS and to enhance thereby the understanding of the dipolar coupling between magnetic nanoparticles, which will be indispensable in any future planning of applications for two dimensional nanoparticle assemblies.
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DRESEN Dominique; DISCH Sabrina; HONECKER Dirk and MEES Flore. (2017). Dipolar correlations in hexagonal and square arrays of magnetic nanoparticles. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-53-266
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