Graphene supported graphone/graphane bilayer nanostructure material for spintronics.

Ray, Sekhar C., Soin, Navneet ORCID: 0000-0002-0196-2071, Makgato, Thuto, Chuang, C.H., Pong, W.F., Roy, Susanta S., Ghosh, Sarit K., Strydom, Andre M. and McLaughlin, J.A. (2014) Graphene supported graphone/graphane bilayer nanostructure material for spintronics. Scientific Reports, 4 (3862). ISSN 2045-2322

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Official URL: http://www.nature.com/articles/srep03862

Abstract

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.

Item Type: Article
Additional Information: This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
Uncontrolled Keywords: electronic properties and devices, graphene
Divisions: University of Bolton Research Centres > Institute for Renewable Energy and Environmental Technologies
Depositing User: Tracey Gill
Date Deposited: 21 Mar 2016 14:33
Last Modified: 05 Mar 2018 16:18
Identification Number: 10.1038/srep03862
URI: http://ubir.bolton.ac.uk/id/eprint/823

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