https://meetings-archive.aps.org/mar/2011/p18/1/
Neutron Scattering Studies of the S=1/2 Triangular Lattice Magnets NaNiO$_2$ and LiNiO$_2$ -...
NaNiO$_2$ and LiNiO$_2$ are isostructural quantum magnets based on a stacked triangular lattice in which magnetism arises from S=1/2 magnetic moments carried by