Abstract
A nanomesh graphene (NMG) was produced by a chemical vapor deposition using porous MgO layers as templates, and its magnetic properties were measured and compared with those of reduced graphene oxide (rGO). Extraordinary ferromagnetism with a saturation magnetization of 0.04emu/g at room temperature was found in the NMG, four times of that of rGO (0.01emu/g). The mesh structure with remarkable corrugations indicates the possible existence of a high density of defects in the NMG, which is believed to contribute to the origin of the ferromagnetism. Our results present a direct connection between the mesh structure and the ferromagnetism, which provides valuable clues to explore the essential origination of carbon magnetism.
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