English: A structure diagram along a <111> direction indicating the burger's vector of the 110 dislocation(s) that could pass through that phase or result in an anti-phase boundary. Nickel atoms are cyan while aluminum are green. The anti-phase boundary is the dotted red line.
On the left is the nickel structure (gamma phase), while the middle and right are the Ni3Al (gamma prime phase), with the right having the Anti-Phase Boundary.
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Captions
Viewed from a <111> direction, this is the effect of a dislocation along <110> passing through the respective structures. Note how the APB swaps the order of the supercell of alternating nickel and aluminum atoms above the boundary.