Conversation from antiferromagnetic MnBr2 to ferromagnetic Mn3Br8 monolayer with large MAE
Abstract A pressing need in low energy spintronics is two-dimensional (2D) ferromagnets with Curie temperature above the liquid-nitrogen temperature (77 K), and sizeable magnetic anisotropy. We studied Mn3Br8 monolayer which is obtained via inducing Mn vacancy at 1/4 population in MnBr2 monolayer. S...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-04-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s11671-021-03523-0 |
| _version_ | 1827848108687491072 |
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| author | Y. Hu S. Jin Z. F. Luo H. H. Zeng J. H. Wang X. L. Fan |
| author_facet | Y. Hu S. Jin Z. F. Luo H. H. Zeng J. H. Wang X. L. Fan |
| author_sort | Y. Hu |
| collection | DOAJ |
| description | Abstract A pressing need in low energy spintronics is two-dimensional (2D) ferromagnets with Curie temperature above the liquid-nitrogen temperature (77 K), and sizeable magnetic anisotropy. We studied Mn3Br8 monolayer which is obtained via inducing Mn vacancy at 1/4 population in MnBr2 monolayer. Such defective configuration is designed to change the coordination structure of the Mn-d5 and achieve ferromagnetism with sizeable magnetic anisotropy energy (MAE). Our calculations show that Mn3Br8 monolayer is a ferromagnetic (FM) half-metal with Curie temperature of 130 K, large MAE of − 2.33 meV per formula unit, and atomic magnetic moment of 13/3μB for the Mn atom. Additionally, Mn3Br8 monolayer maintains to be FM under small biaxial strain, whose Curie temperature under 5% compressive strain is 160 K. Additionally, both biaxial strain and carrier doping make the MAE increases, which mainly contributed by the magneto-crystalline anisotropy energy (MCE). Our designed defective structure of MnBr2 monolayer provides a simple but effective way to achieve ferromagnetism with large MAE in 2D materials. |
| first_indexed | 2024-03-12T09:41:18Z |
| format | Article |
| id | doaj.art-799056a7e660452dbf787e161d6ed0ac |
| institution | Directory Open Access Journal |
| issn | 1556-276X |
| language | English |
| last_indexed | 2024-03-12T09:41:18Z |
| publishDate | 2021-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-799056a7e660452dbf787e161d6ed0ac2023-09-02T13:14:01ZengSpringerOpenNanoscale Research Letters1556-276X2021-04-0116111310.1186/s11671-021-03523-0Conversation from antiferromagnetic MnBr2 to ferromagnetic Mn3Br8 monolayer with large MAEY. Hu0S. Jin1Z. F. Luo2H. H. Zeng3J. H. Wang4X. L. Fan5State Key Laboratory of Solidification Processing, Center for Advanced Lubrication and Seal Materials, School of Material Science and Engineering, Northwestern Polytechnical UniversityQueen Mary University of London Engineering School, Northwestern Polytechnical UniversityState Key Laboratory of Solidification Processing, Center for Advanced Lubrication and Seal Materials, School of Material Science and Engineering, Northwestern Polytechnical UniversityState Key Laboratory of Solidification Processing, Center for Advanced Lubrication and Seal Materials, School of Material Science and Engineering, Northwestern Polytechnical UniversityState Key Laboratory of Solidification Processing, Center for Advanced Lubrication and Seal Materials, School of Material Science and Engineering, Northwestern Polytechnical UniversityState Key Laboratory of Solidification Processing, Center for Advanced Lubrication and Seal Materials, School of Material Science and Engineering, Northwestern Polytechnical UniversityAbstract A pressing need in low energy spintronics is two-dimensional (2D) ferromagnets with Curie temperature above the liquid-nitrogen temperature (77 K), and sizeable magnetic anisotropy. We studied Mn3Br8 monolayer which is obtained via inducing Mn vacancy at 1/4 population in MnBr2 monolayer. Such defective configuration is designed to change the coordination structure of the Mn-d5 and achieve ferromagnetism with sizeable magnetic anisotropy energy (MAE). Our calculations show that Mn3Br8 monolayer is a ferromagnetic (FM) half-metal with Curie temperature of 130 K, large MAE of − 2.33 meV per formula unit, and atomic magnetic moment of 13/3μB for the Mn atom. Additionally, Mn3Br8 monolayer maintains to be FM under small biaxial strain, whose Curie temperature under 5% compressive strain is 160 K. Additionally, both biaxial strain and carrier doping make the MAE increases, which mainly contributed by the magneto-crystalline anisotropy energy (MCE). Our designed defective structure of MnBr2 monolayer provides a simple but effective way to achieve ferromagnetism with large MAE in 2D materials.https://doi.org/10.1186/s11671-021-03523-0First-principles calculationsFerromagnetismTwo-dimensional (2D) materialsMagnetic anisotropy energy (MAE) |
| spellingShingle | Y. Hu S. Jin Z. F. Luo H. H. Zeng J. H. Wang X. L. Fan Conversation from antiferromagnetic MnBr2 to ferromagnetic Mn3Br8 monolayer with large MAE Nanoscale Research Letters First-principles calculations Ferromagnetism Two-dimensional (2D) materials Magnetic anisotropy energy (MAE) |
| title | Conversation from antiferromagnetic MnBr2 to ferromagnetic Mn3Br8 monolayer with large MAE |
| title_full | Conversation from antiferromagnetic MnBr2 to ferromagnetic Mn3Br8 monolayer with large MAE |
| title_fullStr | Conversation from antiferromagnetic MnBr2 to ferromagnetic Mn3Br8 monolayer with large MAE |
| title_full_unstemmed | Conversation from antiferromagnetic MnBr2 to ferromagnetic Mn3Br8 monolayer with large MAE |
| title_short | Conversation from antiferromagnetic MnBr2 to ferromagnetic Mn3Br8 monolayer with large MAE |
| title_sort | conversation from antiferromagnetic mnbr2 to ferromagnetic mn3br8 monolayer with large mae |
| topic | First-principles calculations Ferromagnetism Two-dimensional (2D) materials Magnetic anisotropy energy (MAE) |
| url | https://doi.org/10.1186/s11671-021-03523-0 |
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