| 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. Individual NPs with narrow size distribution of well-defined morphologies are required to control efficiently the nanostructure of the assemblies and the physical properties. In this study, we investigate a method for multi-layered Fe3O4 nanoparticles embedded in polymeric microcapsules. The nanocomposite capsules are highly sensitive to external magnetic fields. The morphology of the capsules was confirmed by TEM, SEM, wide angle X-ray spectroscopy (WAXS), small angle X-ray spectroscopy (SAXS), and neutron reflectivity. X-ray and neutron reflectivity show unique possibility to investigate the chemical and magnetic ordering of thin films in reciprocal space. |
