Abstract
The interactions between the [1 1 2] partial dislocations in gold are studied using atomistic simulations based on the Ackland-Tichy-Vitek-Finnis many-atom interaction model. The atomistically calculated total energy V is found to agree with the corresponding elastic-continuum energy V el reasonably well at large separations of the partial dislocations whereas for decreasing small distances V rises due to the core-core repulsion more steeply than V el . It is concluded that the equilibrium separation (the minimum of V ) is located at the point where the core-core overlap and the associated repulsion become negligible.
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