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

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2445824

Filename

7124473