title: Realization of ferromagnetic graphene oxide with high magnetization by doping graphene oxide with nitrogen.
abstract: The long spin diffusion length makes graphene very attractive for novel spintronic devices, and thus has triggered a quest for integrating the charge and spin degrees of freedom. However, ideal graphene is intrinsic non-magnetic, due to a delocalized π bonding network. Therefore, synthesis of ferromagnetic graphene or its derivatives with high magnetization is urgent due to both fundamental and technological importance. Here we report that N-doping can be an effective route to obtain a very high magnetization of ca. 1.66 emu/g, and can make graphene oxide (GO) to be ferromagnetism with a Curie-temperature of 100.2 K. Clearly, our findings can offer the easy realization of ferromagnetic GO with high magnetization, therefore, push the way for potential applications in spintronic devices.
authors.affiliation: Physics Department & Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, P. R. China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Liu
authors.forename: Nujiang
authors.initials: N
authors.lastname: Tang
authors.forename: Xiangang
authors.initials: X
authors.lastname: Wan
authors.forename: Qian
authors.initials: Q
authors.lastname: Feng
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Xu
authors.forename: Fuchi
authors.initials: F
authors.lastname: Liu
authors.forename: Youwei
authors.initials: Y
authors.lastname: Du
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D060526:Magnetic Fields; D059346:Magnets; D008422:Materials Testing; D009584:Nitrogen / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*
chemical_list: D010087:Oxides; D006108:Graphite; D009584:Nitrogen