Graphene Supported Graphone/Graphane Bilayer Nanostructure Material for Spintronics

doi:10.1038/srep03862

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/104603

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題名:	Graphene Supported Graphone/Graphane Bilayer Nanostructure Material for Spintronics
作者:	S. C. Ray;N. Soin;T. Makgato;C. H. Chuang;W. F. Pong;S. S. Ray;S. K. Ghosh;A. Strydom;J. A. Mclaughlin
貢獻者:	淡江大學物理學系
關鍵詞:	Graphene;Electronic properties and devices
日期:	2014-01-06
上傳時間:	2016-01-06 11:04:33 (UTC+8)
出版者:	London: Nature Publishing Group
摘要:	We report an investigation into the magnetic and electronic properties of partially hydrogenated vertically aligned few layers graphene (FLG) synthesized by microwave plasma enhanced chemical vapor deposition. The FLG samples are hydrogenated at different substrate temperatures to alter the degree of hydrogenation and their depth profile. The unique morphology of the structure gives rise to a unique geometry in which graphane/graphone is supported by graphene layers in the bulk, which is very different from other widely studied structures such as one-dimensional nanoribbons. Synchrotron based x-ray absorption fine structure spectroscopy measurements have been used to investigate the electronic structure and the underlying hydrogenation mechanism responsible for the magnetic properties. While ferromagnetic interactions seem to be predominant, the presence of antiferromagnetic interaction was also observed. Free spins available via the conversion of sp2 to sp3 hybridized structures, and the possibility of unpaired electrons from defects induced upon hydrogenation are thought to be likely mechanisms for the observed ferromagnetic orders.
關聯:	Scientific Reports 4, 3862
DOI:	10.1038/srep03862
顯示於類別:	[物理學系暨研究所] 期刊論文

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