Abstract
This work studies the behavior of magnetic skyrmions forming on columnar defects of potential well type in uniaxial ferromagnetic films in a magnetic field. It is shown that their structure, which is characterized by three sections of magnetic moment rotation, undergoes a series of transformations in a magnetic field. Critical fields for the restructuring of their structure, which substantially depend on the parameters of the defect, are found. It is found that for certain material parameters, when, in the absence of a field, vortex-like irregularities are unstable, they can become stable formations in a nonzero field. Possible types of magnetic materials in which they can be realized are considered.
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Vakhitov, R.M., Solonetskiy, R.V. & Akhmetova, A.A. Specificities of the Magnetization Reversal of Magnetically Uniaxial Films with Columnar Defects. Phys. Metals Metallogr. 121, 416–422 (2020). https://doi.org/10.1134/S0031918X20050130
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DOI: https://doi.org/10.1134/S0031918X20050130