C. Wang, D. F. Diao publised a paper on Nanoscale (JCR 1, IF:7.394)Views [2873] Delivery time :2015-02-01 12:25:26

       Dr.  Chao Wang  and Prof. Dongfeng Diao have  published a paper titled as “Nanosized  graphene crystallite induced strong magnetism in pure carbon  films”  on Nanoscale (JCR1, IF:7.39).

Nanosized  graphene crystallite induced strong magnetism in pure carbon  films

Chao  Wang, Xi Zhang and Dongfeng Diao

Nanoscale, 2015, 7, 4475（Full  paper-Nanoscale, 2015, 7, 4415）

We  report strong magnetism in pure carbon films grown by electron irradiation  assisted physical vapor deposition in electroncyclotron  resonance plasma. The development of graphene nanocrystallites in the amorphous  film matrix, and the dependence of the magnetic behavior on amorphous,  nanocrystallite and graphite-like structures were investigated. Results were  that the amorphous structure shows weak paramagnetism, graphene nanocrystallites  lead to strong magnetization, and graphite-like structures corresponded with a  lower magnetization. At a room temperature of 300 K, the highest  saturation magnetization of 0.37 emu g−1 was found in the nanosized graphene  nanocrystallite structure. The origin of strong magnetism in nanocrystallites  was ascribed to the spin magnetic moment at the graphene layer edges.