Figure 13
Plot of the change in radius RA - rA of the minority atoms on alloying versus RA/RB for 19 AsNa3-type compounds. rA is the radius of the A atom in the structure and is calculated from the lattice parameters as rA = [a/31/2 - (12a2+c2)1/2/12]. The points can be fitted to an equation RA - rA = -1.308 + 2.693(RA/RB) - 1.037(RA/RB)2. Lattice parameters of new compounds of the same structure type can estimated with good accuracy from the observed correlation, as demonstrated in Table 1[link].  [article HTML]

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