Figure 7
A polyhedral model of Ba3Co2O6(CO3)0.7 showing chains of CoO6 and carbonate CO3 in (a) the standard orientation and (b) along the c axis. (c) Isolated views of chains of polyatomic CO32− ions with occupancy 0.7. Single-crystal measurements of inverse susceptibility reveal inter-layer ferromagnetic and intra-layer antiferromagnetic interactions that suggest a spin liquid candidate of Ising spins on the (d) cobalt honeycomb lattice. |