2.3.4.3 Pt2Mo: Ni2Mo


 In Ni2Mo, the imaging conditions are identical to

those for Ni4Mo. 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.