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Title: | A new reversal mode in exchange coupled antiferromagnetic/ferromagnetic disks: distorted viscous vortex |
Author: | 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 |
Keywords: | Imants Vòrtexs Nanoestructures Discos magnètics Histèresi Magnets Vortex-motion Nanostructures Magnetic disks Hysteresis |
Issue Date: | 28-Apr-2015 |
Publisher: | Royal Society of Chemistry |
Abstract: | 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 |
Note: | Reproducció del document publicat a: https://doi.org/10.1039/c5nr01856k |
It is part of: | Nanoscale, 2015, vol. 7, p. 9878-9885 |
URI: | http://hdl.handle.net/2445/166498 |
Related resource: | https://doi.org/10.1039/c5nr01856k |
ISSN: | 2040-3364 |
Appears in Collections: | Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB)) Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) |
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