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Unlocking High Coercivity at Room Temperature in Phase Modified MoS2
Zainab Chowdhry1,2, Kushal Mazumder3, Praveen Hegde1
1Department of Physics, Indian Institute of Technology Madras, Chennai, India.
Abstract:
2D materials showing room-temperature magnetism and high coercivity are highly attractive for combining magnetism with semiconducting functionality in spintronic devices. In this work, the magnetic properties of the 1T phase of MoS2 have been studied at room temperature. We observe ferromagnetism with a coercivity of ∼0.3 T and a maximum saturation magnetization of 0.26 emu g-1 at room temperature. This is the highest among coercivities reported so far in 2D magnets at room temperature. MoS2 nanosheets are prepared using a single-step hydrothermal synthesis with a relative 1T-phase reaching up to 77%. Structural analysis reveals lattice expansion, reflected by an increased interplanar spacing, which correlates directly with both the relative 1T phase fraction and enhanced coercivity. Our findings demonstrate a direct structural route to engineer coercivity through phase and strain control in MoS2, offering a scalable platform for phase-engineered magnetism in layered materials.
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