Dielectric properties of magnetic liquids in high electric fields

Abstract

In this work, dielectric properties of magnetic fluids composed of magnetite particles dispersed in transformer oil and subjected to a uniform magnetic field were investigated at the high alternating electric field intensities in the range of 0.5-2.5 MV/m. Dielectric stability of the magnetic fluid with the particle volume concentration Φ = 0.0019 was observed. The magnetic fluid with the concentration Φ = 0.019 showed the significant changes of permittivity and dielectric losses, too.