Gilbert, Dustin A.Ye, LiVarea Espelt, AïdaAgramunt Puig, SebastiàValle, Núria delNavau Ros, CarlesLópez Barberá, José FranciscoBuchanan, Kristen S.Hoffmann, AxelSánchez Moreno, ÁlvaroSort, JordiLiu, KaiNogués, Josep2020-06-232020-06-232015-04-282040-3364https://hdl.handle.net/2445/166498Magnetic 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 nanostructures8 p.application/pdfengCC-BY(c) Gilbert, Dustin A. et al., 2015http://creativecommons.org/licenses/by/3.0/es/ImantsVòrtexsNanoestructuresDiscos magnèticsHistèresiMagnetsVortex-motionNanostructuresMagnetic disksHysteresisinfo:eu-repo/semantics/article6517442020-06-23info:eu-repo/semantics/openAccess