▎ 摘　　要

Using a simple and facile method, we precisely controlled the two-dimensional layered array structure of graphene oxide (GO)-iron oxide (Fe3O4) nanoparticle hybrid multilayer films and investigated the correlation between the assembled structure of the hybrid films and their magnetic properties. GO-Fe(3)O(4)nanoparticle hybrids were obtained via the ligand exchange of oleic acid-functionalized Fe(3)O(4)nanoparticles with GO at the gas-liquid interface. Hybrids of oriented Fe(3)O(4)nanoparticles and GO monolayers spontaneously formed at the gas-liquid interface, which were subsequently deposited on solid substrates using the Langmuir-Schaefer (LS) technique. Two-dimensional superlattices of GO-Fe(3)O(4)nanoparticle hybrids were fabricated through repeated LS deposition of the nanoparticle monolayer with a hexagonal array structure sandwiched between GO monolayers. The magnetic properties of the GO-Fe(3)O(4)multilayer were measured using SQUID magnetometry. From the field cooling/zero field cooling results, we found that the 2D superlattice-like layered structure of the GO-Fe(3)O(4)multilayer facilitates the layer-dependent properties in the out-of-plane field case due to the dipolar interactions between the top and bottom layers.