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2.3.4.3 Pt?Mo: NipMo
In N2M0, the imaging conditions are identical to
those for N4M0. The c axis of the superlattice may be
parallel to one of the cube directions in the FCC parent.
As in Dla, there are two orientation possibilities per
cube axis, as shown in Figure 2.20a. The real space
lattice and the corresponding B=[001] indexed diffraction
pattern are shown in Figures 2.20a and 2.20b. Indexed B =
[001] and B = [112] diffraction patterns are shown in
Figure 2.19d.
All of the above phases may be present
simultaneously. When this happens, all of the diffraction
patterns overlap.