Fig. 1
View of the crystal and magnetic structure of Cs2[FeCl5(D2O)], with the direction of the toroidal moment and of the applied electric and magnetic fields. The crystal structure at low temperature is I2/c with cell parameters a = 17.016 Å, b = 7.339 Å, c = 16.105 Å, α = γ = 90°, and β = 90.07°, and the magnetic structure, with magnetic propagation vector k = (0,0,0), corresponds to the Shubnikov magnetic space group I2’/c12. The iron, cesium, chlorine, oxygen, and deuterium ions have been represented in brown, light blue, green, red and gray, respectively; the magnetic moments are represented by the red arrows over the iron positions, and the direction of the toroidal moment is represented by a blue arrow.
