Enhanced graphene-edge-induced magnetism by O-2 introduction during electron irradiation assisted carbon film growth
Enhanced graphene-edge-induced magnetism by O-2 introduction during electron irradiation assisted carbon film growth
复制标题
电子辐照辅助碳膜生长过程中引入 O-2 增强石墨烯边缘诱导磁性
DOI：
10.1016/j.apsusc.2019.04.110
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发表时间：
2019
影响因子：
6.7
通讯作者：
Li Yan
中科院分区：
文献类型：
--
作者：
Guo Meiling;Diao Dongfeng;Wang Chao;Yang Lei;Li Pengyang;Wang Qu;ai;Yang Mingshun;Li Yan
我们报道了在电子辐照辅助薄膜生长过程中引入o2对石墨烯纳米晶嵌入碳（GNEC）薄膜结构和磁性行为的影响。结果发现，虽然在膜沉积过程中向腔室中引入了o2，但几乎没有氧原子掺入到膜中。o2的引入主要是选择性去除非晶态碳（a-C）相，逐渐促进石墨烯纳米晶的生长。这种效应使GNEC薄膜中的石墨烯边缘增加，薄膜mmsat 300 K的饱和磁化强度从0.10 emu/g增加到0.28 emu/g。本研究提出了一种增强石墨烯边缘诱导碳磁性的有效途径，为石墨烯基材料在磁性器件中的潜在应用提供了基础依据。
We report the effects of the O2introduction during electron irradiation assisted film growth on the structure and magnetic behavior of the graphene nanocrystallites embedded carbon (GNEC) films. It was found that although O2was introduced into the chamber during film deposition, there were nearly no oxygen atoms incorporated into the film. The introduced O2mainly had an effect on selectively removing the amorphous carbon (a-C) phase and gradually promoting the graphene nanocrystallite growth. Such effect brought about more graphene edges in the GNEC film, and then the saturation magnetization of the filmMsat 300 K increased from 0.10 emu/g to 0.28 emu/g. This research proposes an effective approach to enhance graphene-edge-induced carbon magnetism, providing fundamental basis for potential applications of graphene-based materials in magnetic devices.