Abstract
The ferromagnetism in graphene and its derivatives as light nonmetallic magnets is very important in spintronics. However, the researches and related applications are strongly hindered due to long reaction time, unwanted ferromagnetic impurities and complicated processes involved in the current synthesis methods of ferromagnetic graphene. In this work, we report the efficient production of reduced graphene oxide with simultaneous N doping (NrGO) by direct reduction of graphene oxide in N2 plasma environment at room temperature, and significantly enhanced room temperature ferromagnetism has been observed. The pyrrolic N bonding configuration has been confirmed to be the origin of the induced ferromagnetism in NrGO. The N2 plasma treatment provides an efficient technique for the N doping and massive synthesis of ferromagnetic graphene.
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