Title :
New Approach to Closely Spaced Disordered Cobalt–Graphene Polymer Nanocomposites for Non-Conductive RF Ferromagnetic Films
Author :
Takacs, H. ; Viala, B. ; Herman, V. ; Alarcon Ramos, J. ; Tortai, J.-H. ; Duclairoir, F.
Author_Institution :
Lab. d´Electron. et de Technol. de l´Inf., Commissariat a l´Energie Atomique et aux Energies Alternatives, Grenoble, France
Abstract :
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 (1010 μΩ · cm) leading to a constant permeability of 1.9 with a magnetic loss tangent of 10-3 at 10 GHz.
Keywords :
cobalt; core-shell nanostructures; electrical resistivity; ferromagnetic materials; filled polymers; graphene; magnetic leakage; magnetic moments; magnetic permeability; magnetic thin films; nanocomposites; nanomagnetics; Co-C; closely spaced disordered cobalt-graphene polymer nanocomposites; core double-shell cobalt-graphene-polystyrene nanocomposites; electrical resistivity; frequency 10 GHz; grafting schemes; magnetic loss tangent; magnetic moment; magnetic permeability; nonconductive RF ferromagnetic films; Cobalt; Films; Graphene; Nanocomposites; Nanoparticles; Permeability; Polymers; Cobalt; cobalt; high frequency; magnetic; nanocomposite;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2445824
