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Extended Interplanar Linking in Graphite Formed from Vacancy Aggregates

Lookup NU author(s): Professor Patrick Briddon

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Abstract

The mechanical and electrical properties of graphite and related materials such as multilayer graphene depend strongly on the presence of defects in the lattice structure, particularly those which create links between adjacent planes. We present findings which suggest the existence of a new type of defect in the graphite or graphene structure which connects adjacent planes through continuous hexagonal sp(2) bonding alone and can form through the aggregation of individual vacancy defects. The energetics and kinetics of the formation of this type of defect are investigated with atomistic density functional theory calculations. The resultant structures are then employed to simulate high resolution transmission electron microscopy images, which are compared to recent experimental images of electron irradiation damaged graphite.


Publication metadata

Author(s): Trevethan T, Dyulgerova P, Latham CD, Heggie MI, Seabourne CR, Scott AJ, Briddon PR, Rayson MJ

Publication type: Article

Publication status: Published

Journal: Physical Review Letters

Year: 2013

Volume: 111

Issue: 9

Print publication date: 27/08/2013

ISSN (print): 0031-9007

ISSN (electronic): 1079-7114

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevLett.111.095501

DOI: 10.1103/PhysRevLett.111.095501


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