Spontaneous Small Biskyrmions in a Centrosymmetric Rare-Earth Kagome Ferrimagnet
Abstract Magnetic skyrmions with nontrivial topologies have great potential to serve as memory cells in novel spintronic devices. Small skyrmions were theoretically and experimentally confirmed to be generated under the influence of external fields in ferrimagnetic films via Dzyaloshinskii–Moriya in...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-03-01
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| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-024-00534-y |
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| author | Shulan Zuo Kaiming Qiao Zhan Wang Ying Zhang Chengbao Jiang Baogen Shen |
| author_facet | Shulan Zuo Kaiming Qiao Zhan Wang Ying Zhang Chengbao Jiang Baogen Shen |
| author_sort | Shulan Zuo |
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| description | Abstract Magnetic skyrmions with nontrivial topologies have great potential to serve as memory cells in novel spintronic devices. Small skyrmions were theoretically and experimentally confirmed to be generated under the influence of external fields in ferrimagnetic films via Dzyaloshinskii–Moriya interactions (DMIs). However, this topological state has yet to be verified in ferrimagnetic crystals, especially in the absence of external fields and DMIs. Here, spontaneous biskyrmions were directly observed in the Tb0.2Gd0.8Co2 ferrimagnetic crystal with a Kagome lattice using Lorentz transmission electron microscopy. The high-density biskyrmions exhibited a small size (approximately 50 nm) over a wide temperature range, were closely related to subtle magnetic interaction competition, and coexisted with some broken stripes that could be easily converted into zero-field biskyrmions by utilizing proper field-cooling manipulation. These results can be used to establish a platform for investigating functional sub-50-nm skyrmions in ferrimagnetic crystals and to facilitate advanced applications in magnetic devices. |
| format | Article |
| id | doaj-art-1735808472df440886997f238c30af8d |
| institution | Kabale University |
| issn | 1884-4057 |
| language | English |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj-art-1735808472df440886997f238c30af8d2025-01-19T12:29:00ZengNature PortfolioNPG Asia Materials1884-40572024-03-011611710.1038/s41427-024-00534-ySpontaneous Small Biskyrmions in a Centrosymmetric Rare-Earth Kagome FerrimagnetShulan Zuo0Kaiming Qiao1Zhan Wang2Ying Zhang3Chengbao Jiang4Baogen Shen5School of Materials Science and Engineering, Beihang UniversitySchool of Materials Science and Engineering, University of Science and Technology BeijingBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesSchool of Materials Science and Engineering, Beihang UniversityBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of SciencesAbstract Magnetic skyrmions with nontrivial topologies have great potential to serve as memory cells in novel spintronic devices. Small skyrmions were theoretically and experimentally confirmed to be generated under the influence of external fields in ferrimagnetic films via Dzyaloshinskii–Moriya interactions (DMIs). However, this topological state has yet to be verified in ferrimagnetic crystals, especially in the absence of external fields and DMIs. Here, spontaneous biskyrmions were directly observed in the Tb0.2Gd0.8Co2 ferrimagnetic crystal with a Kagome lattice using Lorentz transmission electron microscopy. The high-density biskyrmions exhibited a small size (approximately 50 nm) over a wide temperature range, were closely related to subtle magnetic interaction competition, and coexisted with some broken stripes that could be easily converted into zero-field biskyrmions by utilizing proper field-cooling manipulation. These results can be used to establish a platform for investigating functional sub-50-nm skyrmions in ferrimagnetic crystals and to facilitate advanced applications in magnetic devices.https://doi.org/10.1038/s41427-024-00534-y |
| spellingShingle | Shulan Zuo Kaiming Qiao Zhan Wang Ying Zhang Chengbao Jiang Baogen Shen Spontaneous Small Biskyrmions in a Centrosymmetric Rare-Earth Kagome Ferrimagnet NPG Asia Materials |
| title | Spontaneous Small Biskyrmions in a Centrosymmetric Rare-Earth Kagome Ferrimagnet |
| title_full | Spontaneous Small Biskyrmions in a Centrosymmetric Rare-Earth Kagome Ferrimagnet |
| title_fullStr | Spontaneous Small Biskyrmions in a Centrosymmetric Rare-Earth Kagome Ferrimagnet |
| title_full_unstemmed | Spontaneous Small Biskyrmions in a Centrosymmetric Rare-Earth Kagome Ferrimagnet |
| title_short | Spontaneous Small Biskyrmions in a Centrosymmetric Rare-Earth Kagome Ferrimagnet |
| title_sort | spontaneous small biskyrmions in a centrosymmetric rare earth kagome ferrimagnet |
| url | https://doi.org/10.1038/s41427-024-00534-y |
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