Journal
APPLIED PHYSICS LETTERS
Volume 106, Issue 1, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4905656
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Funding
- National Natural Science Foundation of China [11474151, 11174132]
- Science Foundation of Henan University of Technology [2012JCYC14]
- Doctoral Foundation of Henan University of Technology [2010BS047]
- Henan Provincial Key Science and Technology Project [13A140201]
- National Key Project for Basic Research [2011CB922102, 2012CB932304]
- PAPD, People's Republic of China
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The magnetic properties of 2H phase of MoS2 (2H-MoS2) and 1T phase of MoS2 (1T-MoS2) were investigated both experimentally and theoretically. Lithium (Li) intercalation method was used to prepare single-layer MoS2 sheets. It was found that pristine MoS2 (2H-MoS2) exhibited weak dia-magnetism. 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-MoS2. (C) 2015 AIP Publishing LLC.
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