Effect of temperature on the motion of defects in the graphene lattice
Leysan Kh. Galiakhmetova, 1, Karina A. Krylova, 1,2 1 Institute for Metals Superplasticity Problems of the Russian Academy of Sciences, Ufa, Russia 2 Ufa state petroleum technological university, Ufa, Russia
Abstract
In this work, the defect structure of graphene with a dislocation dipole of several types is investigated by the method of molecular dynamics under conditions of thermal equilibrium by means of modeling. It has been observed that the presence of defects can significantly reduce the temperature at which graphene remains stable in thermal equilibrium. Modeling has shown that at elevated temperatures, dislocations move and a dipole with a shorter arm is formed, with further transformation into a Stone-Wales defect. The Stone-Wales defect disappears at elevated temperatures as a result of the rotation of the C – C bond.
Speaker
Leysan Galiakhmetova
Institute for Metals Superplasticity Problems of the Russian Academy of Sciences
Russian Federation
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