Control growth of ultrathin 2D ferromagnetic manganese selenide nanosheets by chemical vapour deposition
Two-dimensional (2D) magnetic crystals with intrinsic ferromagnetism are highly desirable for potential applications in future spin-electronic devices. However, the controllable synthesis of these 2D magnets, especially the direct growth on substrate surfaces, is still a great challenge. Here, we re...
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| Format: | Final Year Project |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/138589 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Two-dimensional (2D) magnetic crystals with intrinsic ferromagnetism are highly desirable for potential applications in future spin-electronic devices. However, the controllable synthesis of these 2D magnets, especially the direct growth on substrate surfaces, is still a great challenge. Here, we reported a moderate technique of chemical vapour deposition (CVD) to synthesize the ultrathin Nanosheets of ferrimagnet manganese selenide (MnSe) which possesses high-quality. For the significant observation, the CVD-grown 2D MnSe crystals perform distinct ferromagnetic properties with a Curie temperature (TC) around 50 K. Density functional theory (DFT) calculations suggest that the ferromagnetic order in zinc-blende (ZB) MnSe is originated from a spin coupling between the unsaturated Mn and Se atoms. This study represents a progress in the CVD growth of 2D magnetic materials and it has potential influence on energy-efficient information storage as well as processing to a certain extent. |
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