Abstract
Electronic and structural properties are studied at room temperature, whereas the magnetic performances of MoS2-nanoparticles (MoS2-NPs) are studied from room temperature (300 K) down to 5 K within the range of the magnetic field − 10 T to + 10 T. We find that MoS2-NPs display diamagnetic in the temperature range 300–50 K, whereas at ≈ 45 K the M–H hysteresis curve shows the presence of both diamagnetic and ferromagnetic behaviours. The existence of ferromagnetism is significantly enhanced from 40 K down to 5 K, presumably due to Mo-atom, S-vacancies/O-vacancies, defective structure due to the higher density of dangling bonds, and small MoS2-NPs sizes. Different ferromagnetic parameters viz. saturation magnetization, retentivity, and coercivity of MoS2-NP at ≈ 5 K are 55 m emu/g, 45 m emu/g, and 4500 Oe respectively are obtained from the M–H hysteresis curve. The electronic, microstructures and defects are also studied using XPS/UPS and Raman spectrum that correlated/consistence with the magnetic performances of MoS2-NPs. This low temperature (≤ 40 K) ferromagnetism in MoS2-NPs could be useful for low temperature promising potential technological magnetic applications.
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The data that support the findings of this study are available from the corresponding author upon reasonable request.
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S.C.R gratefully acknowledges the National Research Foundation (NRF), South Africa under (Grant No. EQP13091742446).
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Ray, S.C. Electronic, microstructure, and magnetic performances in MoS2-nanoparticles. Appl. Phys. A 128, 834 (2022). https://doi.org/10.1007/s00339-022-05982-3
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DOI: https://doi.org/10.1007/s00339-022-05982-3