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Ferromagnetism in Molybdenum Disulfide Thin Films Annealed in Magnetic Fields

Molybdenum disulfide (MoS2) is a significant material yet to be explored for its magnetic properties. In this letter, thin films of MoS2 are grown on n-silicon substrates via a spin coating method. Deposited films are magnetically annealed at 200 °C with a varying magnetic field from 280 to 520 G. Furthermore, the effect of magnetic field annealing on the structural and magnetization properties of the MoS2 films is analyzed via X-ray diffraction, field emission scanning electronic microscopy, energy dispersive X-ray spectroscopy, atomic force microscopy, and a vibrating sample magnetometer. It is observed that upon magnetic annealing of MoS2 film, a ferromagnetic character can be obtained with retentivity and coercivity of 3.56 × 10–3 emu/cm3 and 74.74 Oe, respectively.