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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/166498
A new reversal mode in exchange coupled antiferromagnetic/ferromagnetic disks: distorted viscous vortex
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Magnetic vortices have generated intense interest in recent years due to their unique reversal mecha-nisms, fascinating topological properties, and exciting potential applications. In addition, the exchangecoupling of magnetic vortices to antiferromagnets has also been shown to lead to a range of novelphenomena and functionalities. Here we report a new magnetization reversal mode of magnetic vorticesin exchange coupled Ir20Mn80/Fe20Ni80microdots: distorted viscous vortex reversal. In contrast to thepreviously known or proposed reversal modes, the vortex is distorted close to the interface and viscouslydragged due to the uncompensated spins of a thin antiferromagnet, which leads to unexpected asymme-tries in the annihilation and nucleationfields. These results provide a deeper understanding of the physicsof exchange coupled vortices and may also have important implications for applications involvingexchange coupled nanostructures
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GILBERT, Dustin a., YE, Li, VAREA ESPELT, Aïda, AGRAMUNT PUIG, Sebastià, VALLE, Núria del, NAVAU ROS, Carles, LÓPEZ BARBERÁ, José francisco, BUCHANAN, Kristen s., HOFFMANN, Axel, SÁNCHEZ MORENO, Álvaro, SORT, Jordi, LIU, Kai, NOGUÉS, Josep. A new reversal mode in exchange coupled antiferromagnetic/ferromagnetic disks: distorted viscous vortex. _Nanoscale_. 2015. Vol. 7, núm. 9878-9885. [consulta: 21 de gener de 2026]. ISSN: 2040-3364. [Disponible a: https://hdl.handle.net/2445/166498]