ELLIPTICAL POLARIZATION IN ROTATIONAL MAGNETIC FIELD

Abstract

The two-dimensional measurements prove that the magnetic hysteresis shows different behaviour at rotational magnetic field comparing its properties to the alternating one. In this paper these phenomena are investigated from theoretical point of view. It is proved that due to the introduced anisotropy tensor the circular polarized rotational magnetic induction yields elliptical polarization for both components of the magnetization as well as for the M-field patterns. The non-zero value of the off-diagonal elements in the anisotropy tensor has influence on the width of the hysteresis loops. It is proved that at small amplitude of the circular polarized rotational magnetic flux both the M-field and the H-field patterns have elliptical polarization. Increasing the amplitude of the induction in the rotational field, at saturation region the H-field patterns have modification in the elliptical polarization.