title: Microwave specific loss power of magnetic fluids subjected to a static magnetic field.
abstract: This paper reports on the frequency dependence of the magnetic and electric power dissipation in a magnetic fluid sample, in the microwave frequency range (0.5 to 8GHz), at various values of the static magnetic field (0 to 167.8kA/m). The computation of the power dissipation relies on the experimental values measured for the complex dielectric permittivity, varepsilon = varepsilon' - ivarepsilon'', and the complex magnetic permeability, mu = mu' - imu'', over the same frequency range. The results show that the magnetic power dissipation is much larger than the electric one for the investigated sample. At a specific frequency, f (Hz) , the power dissipation, p, depends on the external magnetic field, and exhibits a maximum. The result obtained suggests the possibility of controlling the energy absorption in the microwave range by means of the application of an external magnetic field.
authors.affiliation: Department of Electrical Engineering, Trinity College, Dublin 2, Ireland.
authors.forename: P C
authors.initials: PC
authors.lastname: Fannin
authors.forename: I
authors.initials: I
authors.lastname: Malaescu
authors.forename: C N
authors.initials: CN
authors.lastname: Marin
authors.forename: N
authors.initials: N
authors.lastname: Stefu