Abstract
Atomistic calculations of the core structures of six different nonscrew 1/2(111) dislocations lying on a (110) plane have been made using three different central inter-atomic forces. The cores of all the dislocations studied have been found to be similar: planar, confined to a single (110) plane. The results are, therefore, interpreted in terms of a density of the Burgers vector in this plane. The determination of the core structure by both the type of the crystal lattice and assumed interatomic forces is discussed in terms of restoring forces for (110) planes which well characterize the strength of binding in a given crystal structure.