Ferromagnetism in nanomesh graphene

详细信息    查看全文

• 作者：Guoqing Ning^a ; ^{ngq@cup.edu.cn} ; ^{ninggq@gmail.com} ; Chenggen Xu^a ; Ling Hao^b ; Olga Kazakova^b ; Zhuangjun Fan^c ; Hao Wang^a ; Kunxun Wang^a ; Jinsen Gao^a ; Weizhong Qian^d ; Fei Wei^d
• 刊名：Carbon
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：51
• 期：Complete
• 页码：390-396
• 全文大小：1914 K

文摘

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 0.04 emu/g at room temperature was found in the NMG, four times of that of rGO (0.01 emu/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.