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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2403.05151 |
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| _version_ | 1866910358390702080 |
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| author | Ślęzak, M. Wagner, T. Bharadwaj, V. K. Gomonay, O. Kozioł-Rachwał, A. Menteş, T. O. Locatelli, A. Zając, M. Wilgocka-Ślęzak, D. Dróżdż, P. Ślęzak, T. |
| author_facet | Ślęzak, M. Wagner, T. Bharadwaj, V. K. Gomonay, O. Kozioł-Rachwał, A. Menteş, T. O. Locatelli, A. Zając, M. Wilgocka-Ślęzak, D. Dróżdż, P. Ślęzak, T. |
| contents | Magnetic vortices are topological spin structures frequently found in ferromagnets, yet novel to antiferromagnets. By combining experiment and theory, we demonstrate that in a nanostructured antiferromagnetic-ferromagnetic NiO(111)-Fe(110) bilayer, a magnetic vortex is naturally stabilized by magnetostatic interactions in the ferromagnet and is imprinted onto the adjacent antiferromagnet via interface exchange coupling. We use micromagnetic simulations to construct a corresponding phase diagram of the stability of the imprinted antiferromagnetic vortex state. Our in depth analysis reveals that the interplay between interface exchange coupling and the antiferromagnet magnetic anisotropy plays a crucial role in locally reorienting the Néel vector out-of-plane in the prototypical in-plane antiferromagnet NiO and thereby stabilizing the vortices in the antiferromagnet. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_05151 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Imprinting of Antiferromagnetic Vortex States in NiO-Fe Nanostructures Ślęzak, M. Wagner, T. Bharadwaj, V. K. Gomonay, O. Kozioł-Rachwał, A. Menteş, T. O. Locatelli, A. Zając, M. Wilgocka-Ślęzak, D. Dróżdż, P. Ślęzak, T. Mesoscale and Nanoscale Physics Materials Science Magnetic vortices are topological spin structures frequently found in ferromagnets, yet novel to antiferromagnets. By combining experiment and theory, we demonstrate that in a nanostructured antiferromagnetic-ferromagnetic NiO(111)-Fe(110) bilayer, a magnetic vortex is naturally stabilized by magnetostatic interactions in the ferromagnet and is imprinted onto the adjacent antiferromagnet via interface exchange coupling. We use micromagnetic simulations to construct a corresponding phase diagram of the stability of the imprinted antiferromagnetic vortex state. Our in depth analysis reveals that the interplay between interface exchange coupling and the antiferromagnet magnetic anisotropy plays a crucial role in locally reorienting the Néel vector out-of-plane in the prototypical in-plane antiferromagnet NiO and thereby stabilizing the vortices in the antiferromagnet. |
| title | Imprinting of Antiferromagnetic Vortex States in NiO-Fe Nanostructures |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2403.05151 |