Experimental and Theoretical Validation of Room Temperature Intrinsic Ferromagnetism in Cr3C2 Due to Interstitial Carbon Atoms.
- Resource Type
- Article
- Authors
- Javid, Muhammad; Jiang, Xue; Gao, Yinlu; Zhao, Lizhong; Zhang, Xuefeng; Xu, Xiaohui; Farid, Amjad; Saleem, Muhammad Farooq; Zuo, Xueqing; Zhao, Yongpeng; Pan, Lujun; Dong, Xinglong
- Source
- Physica Status Solidi - Rapid Research Letters. Nov2022, Vol. 16 Issue 11, p1-11. 11p.
- Subject
- *SUPERCONDUCTING quantum interference devices
*FERROMAGNETISM
*VACANCIES in crystals
*ATOMS
*ORBITAL interaction
- Language
- ISSN
- 1862-6254
Ferromagnetism is explored in Cr3C2 from microscopic to electronic levels and the spin coupling is attributed to the p electrons of the nearest‐neighbor carbon atoms around the Cr–C atomic interactions. By using the spin‐polarized density functional calculations, four models are formulated. The models reveal that the C atoms seated in tri‐prism I site can induce magnetic moments and the C vacancies can also take part in the induced magnetic moment. The p–d orbital interactions between C interstitial atom and Cr atom contribute to two asymmetric states of majority and minority spins and lead to weak magnetic moments. The C interstitial atoms and C vacancies in the crystal lattice of Cr3C2 are observed by high‐resolution transmission electron microscopy and electron‐spin resonance (ESR) techniques. The magnetic properties of Cr3C2 are investigated by a superconducting quantum interference device. [ABSTRACT FROM AUTHOR]