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Description
The jumps detected in the single-peak and the double-peak GMI ratio dependences of glass-covered CoSiB microwires [1] have been identified as the complex shape pulses in a modified experiment of Sixtus and Tonks. The shape of the induced pulses is given by a combination of two processes: the irreversible movement of the single domain wall and the radial displacement of the transition region (90$^\circ$-domain). The numerically calculated magnetic flux changes connected with the three characteristic pulses have shown that complex pulses of the 2. and 3. type are connected with the increase in the magnetic flux, which corresponds to 10 $\%$ change in value compared to the pulse of 1. type. Finally, this change also proves our assumption that during the rapid onset of magnetization reversal in the soft ferromagnetic CoSiB microwires the combination of displacements of the two domain walls occurs.
Acknowledgements
This research was supported by the Slovak Research and Development Agency under contract No. APVV-16-0079, by VEGA grant No. 1/0350/24 from the Scientific Grant Agency of the Ministry for Education of the Slovak Republic, by the project “Support for the Research and Development Potential in the area of Transportation Vehicles” ITMS 2014+ Code 313011T557 and by Foundation Volkswagen Slovakia Grant No. 085/15_RT.
References
[1] J. Kravčák and P. Vrábel, “Magnetoimpedance of soft ferromagnetic CoSiB microwire suitable for sensor applications,” AIP Conference Proceedings. AIP Publishing, 2024. doi: 10.1063/5.0187659.
