Features of the Magnetic Properties of Thin-Film Composites Made with a Solid Solution of the CoGaxFe2 –xO4 and Polyvinylidene Fluoride

Abstract

Thin-film magnetic composite films made using polyvinylidene fluoride (PVDF) and a solid solution of the CoGa_xFe_2 – xO₄ type (x = 1.75) were synthesized, and their magnetic characteristics are studied. The dependences of magnetic permeability on the frequency and strength of the alternating field are investigated. It is assumed that the reason of the growth of the magnetic permeability due to the magnetic field strength is the displacement of domain boundaries and the orientation of domain moments under the action of an external field, and a sharp decrease in the magnetic permeability versus the frequency of the magnetic field is due to the demagnetizing effect of the eddy currents.