Magnetism in Two-Dimensional Ilmenenes: Intrinsic Order and Strong Anisotropy
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866908949836464128 |
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| author | Aguilera-del-Toro, R. H Arruabarrena, M. Leonardo, A. Ayuela, A. |
| author_facet | Aguilera-del-Toro, R. H Arruabarrena, M. Leonardo, A. Ayuela, A. |
| contents | Iron ilmenene is a new two-dimensional material that has recently been exfoliated from the naturally-occurring iron titanate found in ilmenite ore, a material that is abundant on earth surface. In this work, we theoretically investigate the structural, electronic and magnetic properties of 2D transition-metal-based ilmenene-like titanates. The study of magnetic order reveals that these ilmenenes usually present intrinsic antiferromagnetic coupling between the 3d magnetic metals decorating both sides of the Ti-O layer. Furthermore, the ilmenenes based on late 3d brass metals, such as CuTiO$_3$ and ZnTiO$_3$, become ferromagnetic and spin compensated, respectively. Our calculations including spin-orbit coupling reveal that the magnetic ilmenenes have large magnetocrystalline anisotropy energies when the 3d shell departs from being either filled or half-filled, with their spin orientation being out-of-plane for elements below half-filling of 3d states and in-plane above. These interesting magnetic properties of ilmenenes make them useful for future spintronic applications because they could be synthesized as already realized in the iron case. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2211_01732 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Magnetism in Two-Dimensional Ilmenenes: Intrinsic Order and Strong Anisotropy Aguilera-del-Toro, R. H Arruabarrena, M. Leonardo, A. Ayuela, A. Materials Science Iron ilmenene is a new two-dimensional material that has recently been exfoliated from the naturally-occurring iron titanate found in ilmenite ore, a material that is abundant on earth surface. In this work, we theoretically investigate the structural, electronic and magnetic properties of 2D transition-metal-based ilmenene-like titanates. The study of magnetic order reveals that these ilmenenes usually present intrinsic antiferromagnetic coupling between the 3d magnetic metals decorating both sides of the Ti-O layer. Furthermore, the ilmenenes based on late 3d brass metals, such as CuTiO$_3$ and ZnTiO$_3$, become ferromagnetic and spin compensated, respectively. Our calculations including spin-orbit coupling reveal that the magnetic ilmenenes have large magnetocrystalline anisotropy energies when the 3d shell departs from being either filled or half-filled, with their spin orientation being out-of-plane for elements below half-filling of 3d states and in-plane above. These interesting magnetic properties of ilmenenes make them useful for future spintronic applications because they could be synthesized as already realized in the iron case. |
| title | Magnetism in Two-Dimensional Ilmenenes: Intrinsic Order and Strong Anisotropy |
| topic | Materials Science |
| url | https://arxiv.org/abs/2211.01732 |