Amorphous Finemet films for visualization of inhomogeneous magnetic fields

V E Ivanov,V N Lepalovskij

doi:10.1088/1742-6596/1389/1/012112

V E Ivanov, V N Lepalovskij

Open Access

https://doi.org/10.1088/1742-6596/1389/1/012112

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Abstract

This paper shows that amorphous Finemet films can be used as a medium for visualization and topography of inhomogeneous magnetic fields. The intensity of magnetooptical images obtained in the geometry of the polar magneto-optical Kerr effect is proportional to the normal component of the inhomogeneous magnetic field. This allows us to construct two-dimensional topograms of the normal component of the magnetic field. The images observed in the geometry of the longitudinal magneto-optical Kerr effect carry information about the planar component of the field. The vector field of the plane component has singular points that are displayed by magneto-optical images. Applying an external homogeneous field leads to the appearance of new singular points and their motion. At special points, the plane component of the field is equal to the value of the external field. This allows you to display a planar component by recording the coordinates of specific points.

Highlights

Magneto-optical images of the normal component of the inhomogeneous magnetic field can be used to determine the characteristics of the field sources [1, 2]
We focused our attention on experimental observations of the motion of singular points under the action of a uniform external field and the possibility of constructing topograms of plane components of a non-uniform field
magnetooptical images (MOIs) of the plane component of the field in longitudinal sensitivity reflects the angular distribution of the plane component of a nonuniform field by gradations of brightness and the presence of singular points

Summary

Introduction

Magneto-optical images of the normal component of the inhomogeneous magnetic field can be used to determine the characteristics of the field sources [1, 2]. The intensity of magnetooptical images obtained in the geometry of the polar magneto-optical Kerr effect is proportional to the normal component of the inhomogeneous magnetic field. The images observed in the geometry of the longitudinal magneto-optical Kerr effect carry information about the planar component of the field.

Results

Conclusion