研究目的
Investigating the magnetooptical visualization and mapping of magnetic stray fields over the surface of composite permanent magnets using gadolinium–cobalt amorphous films.
研究成果
The study confirmed the validity of magnetooptical visualization for mapping stray fields of magnetic systems. It demonstrated the possibility of express monitoring of magnetic system parameters using a laboratory model of a magnetooptical visualizer. The comparison of experimental and theoretical patterns provided insights into the structural and magnetic nonuniformities of the systems.
研究不足
The resolution of the visualization is determined by the domain size in the indicator film and by the resolution of the optical system used, which was about 10 μm.
1：Experimental Design and Method Selection:
The study used indicator amorphous films with perpendicular anisotropy to map stray fields of magnetic systems. The magnetooptical visualization was performed using a laboratory model of a magnetooptical visualizer based on Gd–Co amorphous films.
2：Sample Selection and Data Sources:
The model magnetic systems consisted of two rectangular plates of composite permanent magnets. The plates were magnetized perpendicular to their largest surface.
3：List of Experimental Equipment and Materials:
A laboratory model of the magnetooptical visualizer, Gd–Co amorphous films, and composite permanent magnets were used.
4：Experimental Procedures and Operational Workflow:
The visualization of stray fields was observed in the geometry of the magnetooptical polar Kerr effect. The magnetooptical images were recorded by a video camera.
5：Data Analysis Methods:
The experimental and theoretical patterns were compared to confirm the validity of the magnetooptical visualization.
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