Bend Induced Magnetic Bistability in Amorphous Microwires

Chizhik, Alexandr; Corte-Leon, Paula; Zhukova, Valentina; Zhukov, Arcady

doi:10.1080/10667857.2023.2282318

Cited by 3 publications

References 38 publications

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Direct observation of magnetic domain walls in glass-coated submicronic amorphous wires

Óvári,

Ababei,

Stoian

et al. 2024

Sci Rep

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Results on the magnetic domain walls in rapidly solidified magnetostrictive and non-magnetostrictive amorphous submicronic wires are reported. Utilizing Lorentz transmission electron microscopy (LTEM) for the first time in this context, we have visualized and analyzed the domain walls in such ultra-thin amorphous wires. All the investigated samples display vortex magnetic domain walls, regardless of wire composition or diameter. In non-magnetostrictive wires, the domain walls maintain their structure and symmetry under varying magnetic field conditions. In contrast, magnetostrictive wires show an elongation of their domain walls upon magnetic field application, a response linked to the magnetoelastic coupling between magnetostriction and internal stresses induced during wire preparation. This study advances the understanding of magnetization reversal processes in amorphous submicronic wires. The insights gained are crucial for future developments in miniaturized magnetic devices.

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Direct observation of magnetic domain walls in glass-coated submicronic amorphous wires

Óvári,

Ababei,

Stoian

et al. 2024

Sci Rep

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Magnetic Domain Walls in Rapidly Solidified Magnetostrictive and Non-Magnetostrictive Submicron Amorphous Wires

Óvári,

Ababei,

Stoian

et al. 2024

2024 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers)

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Spiral Annealing of Magnetic Microwires

Chizhik,

Corte-Leon,

Zhukova

et al. 2024

Sensors

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A preprocessing technique named “spiral annealing” was applied for the first time to magnetic microwires. In this process, the sample was arranged in a flat spiral shape during annealing, and subsequent measurements were conducted on the unbent sample with the induced stress distribution along and transverse to the sample. The research utilized both magnetic and magneto-optical methods. The anisotropy field magnitude in both the volume and surface of the microwire was measured, and for the first time, a direct correlation between the anisotropy field and the curvature of a spirally annealed microwire was established. Additionally, a connection between the type of surface domain structure and the degree of spiral curvature was identified. The preservation of the distribution of spiral annealing-induced magnetic properties both along and across the microwire is a key effect influencing the technological application of the microwire. The range of induced curvature within which a specific helical magnetic structure can exist was also determined. This insight links the conditions of spiral annealing to the selection of microwires as active elements in magnetic sensors.

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Bend Induced Magnetic Bistability in Amorphous Microwires

Cited by 3 publications

References 38 publications

Direct observation of magnetic domain walls in glass-coated submicronic amorphous wires

Direct observation of magnetic domain walls in glass-coated submicronic amorphous wires

Magnetic Domain Walls in Rapidly Solidified Magnetostrictive and Non-Magnetostrictive Submicron Amorphous Wires

Spiral Annealing of Magnetic Microwires

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