Figure 1
From: Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6

(a) Two-dimensional projection of NiIO6, NiIIO6, NiIIIO6 and TeO6 octahedra onto the ab-plane. (b) NiIO6-NiIIO6 and NiIIIO6-TeO6 honeycomb-ring layers in the ab-plane, stacked to form an NTO crystal structure with R3 lattice symmetry. (c) NTO crystal structure with magnetic exchange constants (J1-J5) among the Ni ions along various paths in the NiI-NiII and NiIII-Te planes. (d) A different view of the NTO crystal structure in the ab-plane.