Reversible and non-reversible influence of mechanical stress on magnetic properties of amorphous microwires
Mechanical stress offers a powerful way of controlling magnetic domain structures and domain wall dynamics inamorphous microwires. In this work, we investigate and compare the effects of reversible and irreversible stressapplication using two complementary approaches: mechanical bending and non-magn...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:dnet:ruidera_____::43c3e5cf8a834ed1960aae9fd4b09d10 |
| Acceso en línea: | https://hdl.handle.net/10578/48218 |
| Access Level: | acceso abierto |
| Palabra clave: | Agnetic bistability Amorphous magnetic microwires Bending stress Domain wall motion Kerr effect Magneto-optic |
| Sumario: | Mechanical stress offers a powerful way of controlling magnetic domain structures and domain wall dynamics inamorphous microwires. In this work, we investigate and compare the effects of reversible and irreversible stressapplication using two complementary approaches: mechanical bending and non-magnetic copper coating. Irreversible stress introduced by copper deposition generates a permanent redistribution of internal stresses transmitted through the glass coating into the metallic core. This modifies the magnetoelastic anisotropy andstabilizes specific domain wall configurations, enabling field driven transformations between energetically closehelical and elliptical domain wall states and providing a mechanism for tuning domain wall mobility andpinning.Reversible stress is realized through controlled bending of the microwire, producing a well-defined spatialdistribution of mechanical stress across the cross-section, with compressive stress localized at the inner surface.Under these conditions, helical surface magnetic structures are stabilized but fully disappear upon removal of thedeformation, allowing direct separation of reversible magnetoelastic effects from permanent structural changes.The irreversible stress engineering and reversible mechanical modulation produce a wide range of magneticresponses, spanning static stabilization of domain configurations and dynamic stress assisted transitions duringmagnetization reversal. This dual approach provides new opportunities for precise control of magnetic anisotropy, domain wall dynamics, and bistability, and is highly relevant for the development of stress sensitive magnetic sensors and adaptive microwire based devices |
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