TY  - JOUR
AU  - Cai, Liang
AU  - Duan, Hengli
AU  - Liu, Qinghua
AU  - Wang, Chao
AU  - Tan, Hao
AU  - Hu, Wei
AU  - Hu, Fengchun
AU  - Sun, Zhihu
AU  - Yan, Wensheng
PY  - 2021
TI  - Ultrahigh-temperature ferromagnetism in MoS2 Moiré superlattice/graphene hybrid heterostructures
JO  - Nano Research
SN  - 1998-0124
SP  - 4182
EP  - 4187
VL  - 14
IS  - 11
AB  - Realizing high-temperature ferromagnetism in two-dimensional (2D) semiconductor nanosheets is significant for their applications in next-generation magnetic and electronic nanodevices. Herein, this goal could be achieved on a MoS2 Moiré superlattice grown on the reduced graphene oxide (RGO) substrate by a hydrothermal approach. The as-synthesized bilayer MoS2 superlattice structure with rotating angle (ϕ = 13° ± 1°) of two hexagonal MoS2 lattices, possesses outstanding ferromagnetic property and an ultra-high Curie temperature of 990 K. The X-ray absorption near-edge structure and ultraviolet photoelectron spectroscopies combined with density functional theory calculation indicate that the covalent interactions between MoS2 Moiré superlattice and RGO substrate lead to the formation of interfacial Mo-S-C bonds and complete spin polarization of Mo 4d electrons near the Fermi level. This design could be generalized and may open up a possibility for tailoring the magnetism of other 2D materials.
UR  - https://doi.org/10.1007/s12274-021-3360-9
DO  - 10.1007/s12274-021-3360-9