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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.05762 |
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| _version_ | 1866914243302916096 |
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| author | Singh, Anupam K. Mohseni, Katayoon Ney, Verena Ney, Andreas Guan, Yicheng Kostanovski, Ilya Tangi, Malleshwararao Marzouk, Mostafa I. S. Valvidares, Manuel Gargiani, Pierluigi Tonnerre, Jean-Marc Perndorfer, P. F. Buczek, P. A. Ernst, Arthur Meyerheim, Holger L. Parkin, Stuart S. P. |
| author_facet | Singh, Anupam K. Mohseni, Katayoon Ney, Verena Ney, Andreas Guan, Yicheng Kostanovski, Ilya Tangi, Malleshwararao Marzouk, Mostafa I. S. Valvidares, Manuel Gargiani, Pierluigi Tonnerre, Jean-Marc Perndorfer, P. F. Buczek, P. A. Ernst, Arthur Meyerheim, Holger L. Parkin, Stuart S. P. |
| contents | Noncollinear spin structures have attracted tremendous attention because they offer a versatile platform for spin control and manipulation, essential in spintronics. Realizing noncollinearity in ferrimagnetic insulators is of particular interest as they can be potentially utilized in low-damping spintronics with tunable magnetic order. Within the spinel-ferrite family, Zn and Al-substituted nickel ferrite (NiZAF) has emerged as an excellent choice for low-damping spintronics. However, realizing noncollinearity in such systems remains challenging. Here, we present evidence of noncollinear spin structure in the NiZAF thin films induced by the rare earth Dy-doping, utilizing the soft x-ray spectroscopy methods such as magnetic circular dichroism and x-ray resonant magnetic reflectivity (XRMR). In particular, XRMR reveals a spiral-type spin structure, which is attributed to the Dzyaloshinskii-Moriya interaction, arising due to broken inversion symmetry by the Dy-induced local strain field as confirmed by our theoretical calculations. The realization of noncollinearity in the spinel-ferrite opens pathway to explore the possibility of chiral magnetic domains and topological spin textures exhibiting promise for oxide-based spintronics |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_05762 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Noncollinear spin structure in Dy-doped classical ferrimagnet Singh, Anupam K. Mohseni, Katayoon Ney, Verena Ney, Andreas Guan, Yicheng Kostanovski, Ilya Tangi, Malleshwararao Marzouk, Mostafa I. S. Valvidares, Manuel Gargiani, Pierluigi Tonnerre, Jean-Marc Perndorfer, P. F. Buczek, P. A. Ernst, Arthur Meyerheim, Holger L. Parkin, Stuart S. P. Materials Science Noncollinear spin structures have attracted tremendous attention because they offer a versatile platform for spin control and manipulation, essential in spintronics. Realizing noncollinearity in ferrimagnetic insulators is of particular interest as they can be potentially utilized in low-damping spintronics with tunable magnetic order. Within the spinel-ferrite family, Zn and Al-substituted nickel ferrite (NiZAF) has emerged as an excellent choice for low-damping spintronics. However, realizing noncollinearity in such systems remains challenging. Here, we present evidence of noncollinear spin structure in the NiZAF thin films induced by the rare earth Dy-doping, utilizing the soft x-ray spectroscopy methods such as magnetic circular dichroism and x-ray resonant magnetic reflectivity (XRMR). In particular, XRMR reveals a spiral-type spin structure, which is attributed to the Dzyaloshinskii-Moriya interaction, arising due to broken inversion symmetry by the Dy-induced local strain field as confirmed by our theoretical calculations. The realization of noncollinearity in the spinel-ferrite opens pathway to explore the possibility of chiral magnetic domains and topological spin textures exhibiting promise for oxide-based spintronics |
| title | Noncollinear spin structure in Dy-doped classical ferrimagnet |
| topic | Materials Science |
| url | https://arxiv.org/abs/2601.05762 |