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Issue 21, 2013
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Control of one-dimensional magnetism in graphenevia spontaneous hydrogenation of the grain boundary

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Abstract

We propose that control of one-dimensional (1D) magnetism in graphene could be made easier by spontaneous hydrogenation of chemically reactive grain boundaries (GBs) in polycrystalline graphenes. Unlike pristine graphene, where hydrogen adsorption favors the formation of zero-dimensional (0D) clusters, the defect cores (pentagon, heptagon and octagon) at the GBs in polycrystalline graphene promote hydrogenation along the GBs. The hydrogenation in polycrystalline graphene starts at the GBs, proceeds gradually towards the grain interior (GI) and results in smooth 1D graphane–graphene interfaces. Our calculations show that the type (ferro- or antiferro-magnetism) and strength of the magnetism can be controlled by controlling the orientation of GBs. Since GBs in single-layer graphenes can be fabricated in a controllable way in experiments, the hydrogenation of GBs could be a unique method to realize large-area magnetic graphenes for future spintronic applications.

Graphical abstract: Control of one-dimensional magnetism in graphene via spontaneous hydrogenation of the grain boundary

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Supplementary files

Article information


Submitted
21 Feb 2013
Accepted
05 Apr 2013
First published
09 Apr 2013

Phys. Chem. Chem. Phys., 2013,15, 8271-8275
Article type
Paper

Control of one-dimensional magnetism in graphene via spontaneous hydrogenation of the grain boundary

W. Yin, S. Wei and Y. Yan, Phys. Chem. Chem. Phys., 2013, 15, 8271 DOI: 10.1039/C3CP50781E

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