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dislocation (in a crystal)

dislocation in a crystal lattice
Section of a crystal lattice including an edge dislocation (A) and a screw dislocation (B)
A dislocation is a crystal defect in which the normal crystal lattice is distorted (e.g., by the interposition of an extra half plane of atoms – an edge dislocation.) The type and number of dislocations in a crystal help to determine its electrical and mechanical properties.

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