|Shown are two weak-beam images of the same area of a dislocation network with threefold symmetry in a small angle grain boundary in Silicon.
|Three sets of screw dislocations split into partial dislocations interact to form a network of partial dislocations bounding extended and constricted stacking faults.
|Only one set of dislocations and one kind of stacking fault is visible
|Two sets of dislocations are visible; the stacking faults are invisible.
|With more images the Burgers vector of all dislocations and the displacement vectors of the stacking faults can be determined. The complete analysis of this network in given in chapter 7; here the images only serve to illustrate that what you see depends very much on the imaging conditions.
6.3.2 Examples and Case Studies for Dislocations
© H. Föll (Defects - Script)