Magnetism in MoS2 induced by MeV proton irradiation

Abstract

Molybdenum disulphide, a diamagnetic layered dichalcogenide solid, is found to show magnetic ordering at room temperature when exposed to a 2 MeV proton beam. The temperature dependence of magnetization displays ferrimagnetic behavior with a Curie temperature of 895 K. A disorder mode corresponding to a zone-edge phonon and a Mo valence higher than +4, have been detected in the irradiated samples using Raman and X-ray photoelectron spectroscopy, respectively. The possible origins of long-range magnetic ordering in irradiated MoS2 samples are discussed.

References in corpus (4)

• Two-dimensional transition metal dichalcogenides under electron irradiation: defect production and doping
• Induced Magnetic Ordering by Proton Irradiation in Graphite
• $\pi$-Electron Ferromagnetism in Metal Free Carbon Probed by Soft X-Ray Dichroism
• Magnetism in MoS2 induced by MeV proton irradiation

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• Impact of 150keV and 590keV proton irradiation on monolayer MoS2
• Insights into vibrational and electronic properties of MoS${}_2$ using Raman, photoluminescence and transport studies