Abstract

Dielectric properties of composite materials made of epoxy resin filled with different concentrations of goethite (Fe2O[Formula: see text] H2O) nanorods and manganese ferrite (MnFe2O4) are presented in a wide frequency range. The electrical percolation threshold in these composites is close to 30[Formula: see text]vol.%. Electrical conductivity in the composites occurs both below and above the percolation threshold due to the finite conductivity of the epoxy resin under high temperatures.

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