Magnetic phase transitions in CsCoBr3

Elastic neutron-scattering measurements have been performed on CsCoBr3, an Ising-like antiferromagnet on a stacked triangular lattice. Three magnetic phase transitions are seen in both zero field and a magnetic field of 2.2 T applied along the stacking direction c. The field does not qualitatively change the behavior near the phase transitions and the transition temperatures are affected only slightly. The high-temperature ordered phase is …