Acceleration of domain wall motion in metallic cylindrical multilayer
In the context of searching for active elements of magnetic sensors, a new method for local control of domainwall motion in magnetic microwires was proposed. We have classified the microwire - cobalt coating system as acylindrical multilayer. The coating of a microwire with a thin layer of cobalt in...
| Autores: | , , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Recursos: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/45856 |
| Acesso em linha: | https://doi.org/10.1016/j.sna.2025.117259 https://hdl.handle.net/10578/45856 https://www.sciencedirect.com/science/article/pii/S0924424725010659 |
| Access Level: | acceso abierto |
| Palavra-chave: | Amorphous soft magnetic materials Domain wall propagation Magnetic bistability Magnetic sensors Magnetic wires |
| Resumo: | In the context of searching for active elements of magnetic sensors, a new method for local control of domainwall motion in magnetic microwires was proposed. We have classified the microwire - cobalt coating system as acylindrical multilayer. The coating of a microwire with a thin layer of cobalt in the form of a tube or half-tubeleads to local acceleration of domain wall motion when it passes under the cobalt coating. The difference in thevelocity in the coated and uncoated areas can reach 3–5 times depending on the type of coating. The study of thedomain wall velocity was carried out using the Sixtus-Tonks method. A series of explanatory fluxmetric andmagneto-optical experiments were also carried out. The main mechanism of the effect of the cobalt coating isassociated with the distribution of stray fields induced by the coating. The axially directed demagnetization fieldin the case of a tube-type coating, or a combination of axial and perpendicular demagnetization fields, as in thecase of a half-tube, make the main contribution to the local control of domain wall mobility. |
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