Antiferromagnetic Heisenberg S=5/2 spin chain compound SrMn2V2O8

Large single crystals of the new compound SrMn₂V₂O₈ have been grown by the floating-zone method. This transition-metal based oxide is isostructural to SrNi₂V₂O₈, described by the tetragonal space group I4₁cd. Magnetic properties were investigated by means of susceptibility, magnetization, and specific-heat measurements. The compound behaves like a 1D magnetic system above the ordering temperature (T_N=43 K). The magnetic ground state can be described as a classical long-range ordered antiferromagnet with weak anisotropy.