PHYS.REV.B103,195436(2021), Ripplocations in layered materials Sublinear scaling and basal climb, J.McHugh ,P.Mouratidis,K.Jolley.pdf (4.35 MB)
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Ripplocations in layered materials: Sublinear scaling and basal climb

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journal contribution
posted on 16.09.2021, 09:58 by James McHugh, Paul MouratidisPaul Mouratidis, Kenny JolleyKenny Jolley
The ripplocation is a crystallographic defect which is unique to layered materials, combining nanoscale delamination with the crystallographic slip of a basal dislocation. Here, we have studied basal dislocations and ripplocations, in single and multiple van der Waals layers, using analytical and computational techniques. Expressions for the energetic and structural scaling factors of surface ripplocations are derived, which are in close correspondence to the physics of a classical carpet ruck. Our simulations demonstrate that the lowest-energy structure of dislocation pileups in layered materials is the ripplocation, while large dislocation pileups in bulk graphite demonstrate multilayer delamination, curvature, and voids. This can provide a concise explanation for the large volumetric expansion seen in irradiated graphite.

Funding

Mechanisms of Retention and Transport of Fission Products in Virgin and Irradiated Nuclear Graphite

Engineering and Physical Sciences Research Council

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EDF Energy

Proposal for a Tier 2 Centre - HPC Midlands Plus

Engineering and Physical Sciences Research Council

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History

School

  • Science

Department

  • Chemistry

Published in

Physical Review B

Volume

103

Issue

19

Publisher

American Physical Society (APS)

Version

VoR (Version of Record)

Rights holder

© American Physical Society

Publisher statement

The published version is also available on the publisher's website at https://doi.org/10.1103/physrevb.103.195436.

Acceptance date

10/05/2021

Publication date

2021-05-24

Copyright date

2021

ISSN

2469-9950

eISSN

2469-9969

Language

en

Depositor

Dr Kenny Jolley. Deposit date: 11 September 2021

Article number

195436