Enhancement of magnetism by structural phase transition in MoS{sub 2}
- Nanjing National Laboratory of Microstructures and Jiangsu Provincial Laboratory for Nanotechnology, Nanjing University, Nanjing 210093 (China)
- Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000 (China)
The magnetic properties of 2H phase of MoS{sub 2} (2H-MoS{sub 2}) and 1T phase of MoS{sub 2} (1T-MoS{sub 2}) were investigated both experimentally and theoretically. Lithium (Li) intercalation method was used to prepare single-layer MoS{sub 2} sheets. It was found that pristine MoS{sub 2} (2H-MoS{sub 2}) exhibited weak diamagnetism. After exfoliating by Li intercalation, the crystal structure transformed from 2H to 1T phase, and the magnetism was significantly enhanced from diamagnetism to paramagnetism accordingly. With further annealing in argon atmosphere, the 2H phase recovered gradually from 1T phase, and the magnetism decreased correspondingly. Using crystal field theory and combining the results of first principle calculation, we conclude that the enhanced magnetism can be attributed to the Mo atoms of 1T-MoS{sub 2}.
- OSTI ID:
- 22395657
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 1 Vol. 106; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of few-layer 1T-MoSe{sub 2} and its superior performance in the visible-light induced hydrogen evolution reaction
Metallicity of 2H-MoS2 induced by Au hybridization