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Abstract

The {112??1} twin interface in graphite is studied using an analytical model for graphite developed earlier. It is shown that the twin interface, composed of a special atomic geometry ('8-4-8' polygons), can be stable and mobile, which confirms the model previously proposed by Platt (Z Kristallogr 1957;109:226). The simulation study indicates that the {112??1} twin interface could consist of a special local atomic structure, namely, the 8-4-8 polygons. The boundary composed of such structure has the energy of 0.09 J/m2 and the activation energy of 3 eV for migration (mostly due to the formation of a kink along the boundary line). The result suggests that existence of a 8-4-8 structure at the twin interface is not improbable compared to the more widely accepted dislocation model. ?? 2001 Elsevier Science Ltd.

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Yoon, C. S., Kim, C. K., & Megusar, J. (2001). Simulation of the twin interface in graphite. Carbon, 39(7), 1045–1049. https://doi.org/10.1016/S0008-6223(00)00219-0

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