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Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
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Spiral magnetic domain structure in cylindrically-shaped microwires
A Chizhik1, A Zhukov2,3, J Gonzalez2
1Departamento de Fisica de Materiales, Universidad del País Vasco, UPV/EHU, San Sebastian, Spain. oleksandr.chyzhyk@ehu.es.
Scientific Reports
|October 12, 2018
Summary
Researchers observed spiral magnetic domains migrating within microwires. External torsion stress transformed these domains, offering insights into novel magnetic states and their control for advanced applications.
Area of Science:
- Condensed matter physics
- Materials science
Background:
- Investigating novel magnetization states is crucial in modern magnetism.
- Controlling magnetization between surface and volume in microwires using the giant magneto-impedance effect has been recently demonstrated.
Purpose of the Study:
- To demonstrate and characterize the spatial migration of spiral magnetic domains in microwires.
- To investigate the influence of external torsion stress on magnetic domain structures.
Main Methods:
- Magneto-optical Kerr effect microscopy for visualizing domain structures.
- Experimental control using external torsion stress.
- Hysteresis and magnetic image simulations based on internal stress models.
Main Results:
- Spatial migration of inclined spiral magnetic domains within microwires was observed.
- The surface domain structure length was found to be limited by the sample length.
- Transformation from spiral to elliptical domain structures was controlled by applied torsion stress.
- Simulated hysteresis and magnetic images showed consistency with experimental findings.
Conclusions:
- A consistent model for the formation and transformation of spiral magnetic domain structures in microwires was proposed.
- The findings provide a deeper understanding of magnetic domain behavior under stress.
- This research contributes to the control of magnetization states in magnetic microwires.
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