| 초록 |
Large-area assemblies of colloidal magnetic nanoparticles (NPs) are promising systems because of their high ability to modulate magnetic properties for application in magnetic data storage, spintronics and photonics. The nanostructure is a key parameter to control dipolar interactions between magnetic NPs which rule the properties. Low dimensionality favors the orientation of nanoparticle magnetic moments in a specific direction and results in strong dipolar interactions and properties. Large interparticle distances show magnetic nanoparticle individual because dipolar interactions are weak. Here we fabricated lamellar structures consisting of alternating Fe3O4 nanoparticles/polymer layer structures on the flat surface as well as in the form of micron-sized granule. The lamellar morphology was confirmed by TEM, SEM, small angle X-ray/neutron scattering (SAXS), and neutron reflectivity. |
