Room temperature ferromagnetism in fluoridated ReS2 nanosheets

Abstract

Two dimensional rhenium dichalcogenides (ReX2, X = S, Se) are becoming a type of semiconducting materials with in-plane anisotropy, which is promising to be applied in electronic devices. While the absence of intrinsic magnetism severely hinders its applications in spintronics. Herein, to meet the increasing demands in two dimensional spintronic materials exploring, we endowed intrinsic ferromagnetism for ReS2 nanosheets through F adsorbing effect. Both the theoretical calculations and experiments demonstrate that F atoms could produce spin moments whilst adsorbing on S atoms, thereby induces magnetic behavior of ReS2 nanosheets. Through fluoridation process controlling, the F adsorbing content could be adjusted, and correspondingly, the magnetism is dependent with the F adsorbing content. The ferromagnetism in fluoridated ReS2 nanosheets retains at room temperature, and its Curie temperature is experimentally estimated to be 392 K. This work provides an effective strategy to introducing room temperature ferromagnetism in ReS2, which is instructive in magnetic investigations on transition metal dichalcogenides.