Substitution of values for h, k, and 1 yields the series

of values for F in Table 2.2

 The D022 reciprocal lattice constructed using those

values of F listed in Table 2.2 is shown in Figure 2.13a.

The lattice is constructed using D022 coordinates and

compared to a corresponding FCC construction in the two

dimensional B = [100] and B = [001] sections shown in

Figure 2.13b. Note that both the (020) and (200) of the

D022 correspond to the (020) and the (200) of the parent

FCC lattice since a/2 FCC = a/2D022. Also, the (004) D022

= 1/4(2a) (the "A" indices from Table 2.2) = a/2 FCC. The

fundamental reflections of the D022 are then in the same

reciprocal lattice positions as the fundamental FCC

reflections. The (011), (022), etc. of the D022 are 1/4
multiples of the FCC (042). This makes the Mo rich (011)

planes of the D022 structure the (042) Mo rich planes of

the FCC parent lattice.

2.3.2 Dla/Pt2Mo/L12 Reciprocal Lattices

 Similar constructions result in the reciprocal

lattices of Ni4Mo and Ni2Mo, shown respectively in Figures

2.14 and 2.15, both lattices in FCC coordinates. The

reciprocal lattice of the FCC ordered gamma prime is shown

in Figure 2.16.