106.
Homogeneous structures A
xB
y with identical A–A or B–B self‐coordination numbers
T1,
T2,
T3, of nearest, next‐nearest and third neighbors are selected. The maximum
Ti values are 2 2 2 (1D row), 6 6 6 (2D hexagonal net) and 12 6 24 (3D cubic close‐packing). Reduced
T1 or
T2 values for A
xB
y can be related with attractive or repulsive A–A (or B–B) interactions. A single set of
T1 T2 T3; y/x values was obtained for y/x = 1–4 and 6. The y/x = 2 structures of three equivalent positions A, B and C are unfavourable for A = ⊕ and B = ⊖ charge or direction of magnetic moments. The spatial distribution of positive and negative potential near A
+ and B
− positions gives rise to neutral C positions. Frustrated magnetic moments at C positions are disordered. (© 2003 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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