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arXiv · 1209.3569

Magnetism in MoS2 induced by MeV proton irradiation

S. Mathew·K. Gopinadhan·T. K. Chan·X. J. Yu·D. Zhan·L. Cao·A. Rusydi·M. B. H. Breese·S. Dhar·Z. X. Shen·T. Venkatesan·John TL Thong
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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.

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S. Mathew, K. Gopinadhan, T. K. Chan, X. J. Yu, D. Zhan, L. Cao, A. Rusydi, M. B. H. Breese, S. Dhar, Z. X. Shen, T. Venkatesan, John TL Thong. 2012-09-17. Magnetism in MoS2 induced by MeV proton irradiation. https://doi.org/10.1063/1.4750237

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