Abstract
Ferromagnetism of two-dimensional (2D) materials mediated by strain engineering has been extensively studied in theoretical calculations. However, due to the difficulty of introducing strain into 2D materials, experimental research has always been a challenge. We have fabricated MoS2 thin films using polymer assisted deposition and have observed strain-induced ferromagnetism in buckled MoS2 films. After buckling, the saturated magnetization (Ms) of buckled films at 300 K (0.486 emu·g−1) is enhanced 7.5 times compared to that of flat films (0.065 emu·g−1), while the linear temperature coefficient (χT) of buckled MoS2 films for E12g mode of Raman spectra is reduced to one third. Our results suggest that biaxial tensile strain plays a significant role in modulating magnetism, which may provide a feasible way for the fabrication and study of strain-related spintronic devices.
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