Identifying the effects of oxygen on the magnetism of WS 2 nanosheets
Source abstract
Abstract
In this paper, the microstructure and magnetic properties of the exfoliated and sulfurized WS2 nanosheets were researched to identify the effects of oxygen on magnetism. The exfoliated WS2 nanosheets were prepared by a liquid exfoliation method, and then the sulfurized WS2 nanosheets were obtained after sulfurization of the exfoliated WS2 nanosheets. The exfoliated WS2 nanosheets show paramagnetism, and contain 1T and 2H phases, sulfur vacancies and some oxygen. The sulfurized WS2 nanosheets with an intrinsic structure exhibit an ordered magnetic signature. A combination of detailed experimental research and first-principles calculation demonstrates that oxygen in the structure of WS2 nanosheets would not induce magnetic moments, which can even suppress the spin-polarized edge states. These results identified the effects of oxygen on the magnetism of WS2 nanosheets and would promote its application in spintronics.
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Research context
OpenAlex topics: 2D Materials and Applications · ZnO doping and properties · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physics and Electronic Engineering, Linyi University, Linyi 276000, China
Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
College of Physics and Energy, Fujian Normal University, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fujian Normal University, Fuzhou 350117, China
National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Jiangsu Provincial Key Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, China
Funding
Fujian Provincial Key Laboratory for Quantum Manipulation and New Energy Materials, Fujian Normal University · Natural Science Foundation of Fujian Province · National Natural Science Foundation of China · Natural Science Foundation of Shandong Province
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