Stabilising intrinsic room-temperature ferromagnetic two-dimensional semimetallic Cr2CTx MXene by epitaxial self-intercalation of H2O-etched Cr2(AlLi)C
| Autor: | Xue Li, Zhenying Huang, Hongjie Wang, Wenqiang Hu, Weici Zhuang, Qun Yu, Youbo Wu, Qianwen Sun, Yang Zhou, Guangjin Chen, Junji Mou, Zhexuan Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Journal of Advanced Ceramics, Vol 13, Iss 10, Pp 1546-1552 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2226-4108 2227-8508 |
| DOI: | 10.26599/JAC.2024.9220955 |
| Popis: | Physical properties, such as electrochemical and electromagnetic properties, of two-dimensional MXenes can be improved by enhancing their stability. However, MXenes fabricated via acid etching contain defects, which affect their physical properties. In this study, a method to effectively remove Al residues using only water during MXene fabrication while maintaining structural stability is proposed. The fabrication and intercalation of MXenes are controlled via epitaxial self-intercalation of H2O-etched Cr2(AlLi)C. On the basis of this mechanism, the room-temperature ferromagnetism of two-dimensional few-layered Cr2CTx MXenes, which has a specific saturation magnetization of ~0.26 emu/g and a Curie temperature of > 353 K, is experimentally verified. The calculated electronic band structure implies that the semimetal Cr2CTx MXene has a band gap of 0.75 eV. This study opens new possibilities for the research and applications of industrial-scale manufacturing of MXenes and 2D semiconductors. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|