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We observe a signal with a line-width of ¦¤H ¡Ö 0.7-2.9 mT with a g value that is in the 2.006-2.013 range. The small value of the line-width and the small deviation in the g value from the free-electron value suggest that the spins do not originate from transition-metal impurities but from only carbon-inherited spin species in the graphene sheets. Õâ¾ä»°ÖеĦ¤HºÍg valueÊÇʲôÒâ˼£¿ÕâÁ½¸öÊý¾ÝÊÇÈçºÎµÃµ½µÄ£¿ from J. Phys. Chem. C, Vol. 113, No. 23, 2009 Novel Magnetic Properties of Graphene: Presence of Both Ferromagnetic and Antiferromagnetic Features and Other Aspects È«ÎÄÔÚ¸½¼þÖÐ |
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