Abstract
We have studied the effects of high-energy proton irradiation on the magnetism of the transition-metal dichalcogenide MoS2. The pristine sample showed ferromagnetic and paramagnetic responses with a diamagnetic background, which all decreased initially with increasing irradiation dose. The ferromagnetic component increased subsequently with further irradiation, for which a spin-3/2 species was identified from the analysis of the M(H) curve, in contrast to the spin-1 species identified in the pristine sample. The magnetism in our MoS2 samples may be accounted for by the structural defects that apparently are cured by low-dose proton irradiation and subsequently become significant by further irradiation.
Original language | English |
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Pages (from-to) | 93-96 |
Number of pages | 4 |
Journal | Journal of the Korean Physical Society |
Volume | 76 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2020 Jan 1 |
Bibliographical note
Funding Information:This work was supported by the Ministry of Education and the National Research Foundation of Korea (Project No. 2019S1A5A2A03050121). The Korea Basic Science Institute (KBSI) and the Korea Multi-Purpose Accelerator Complex (KOMAC) are, respectively, acknowledged for the measurements and the proton irradiation.
Publisher Copyright:
© 2020, The Korean Physical Society.
Keywords
- High-energy proton irradiation
- Magnetism
- MoS
- Structural defects
ASJC Scopus subject areas
- General Physics and Astronomy