▎ 摘 要
This paper describes the two routes with grafting schemes (covalent or not covalent) for producing non-conductive ferromagnetic films of core double-shell cobalt-graphene-polystyrene nanocomposites. Films present high moment (103 emu/g) and high resistivity (10(10) mu Omega.cm) leading to a constant permeability of 1.9 with a magnetic loss tangent of 10(-3) at 10 GHz.