Elemental barium at high pressure presents many complex crystal structures that have yet to be determined. The most complex of these crystal structures (phase Ba-IVc at 19 GPa) has now been solved and consists of a commensurate host–guest structure with 768 atoms in the basic unit, where the relative alignment of the guest-atom chains can be represented as a two-dimensional pattern with repeating interlocking motifs.
- I. Loa
- R. J. Nelmes
- M. I. McMahon
