我所王超刁东风等在JCR1区(IF7.394)Nanocale发表论文阅读次数 [2872] 发布时间 :2015-02-01 12:25:26

近日，我所王超讲师，刁东风教授在国际期刊Nanoscale(JCR1区,IF7.394)上发论文一篇.

Nanosized graphene crystallite induced strong magnetism in pure carbon films

Chao Wang, Xi Zhang and Dongfeng Diao*

Nanoscale, 2015, 7, 4475

PDF-file:（Full paper-Nanoscale, 2015, 7, 4415）

We report strong magnetism in pure carbon films grown by electron irradiation assisted physical vapor deposition in electron cyclotron 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.