▎ 摘　　要

Cobalt core/graphite shell nanostructures anchored on graphene sheets have been prepared by a chemical vapor deposition process. Transmission electron microscope images show that the cobalt nanoparticles (10-30 nm) are encapsulated by a graphitic shell with a thickness of similar to 3 nm. Magnetic measurements reveal that the material has a typical ferromagnetic behavior with a saturation magnetization of 71.7 emu g(-1) at room temperature. (C) 2012 Elsevier Ltd. All rights reserved.