Figure 3
(a) Magnetic unit cell related to the commensurate antiferromagnetic order of the Er magnetic moments in the 2c site (k1 = [0, 0, ]). (b) Incommensurate sine-modulated magnetic structure formed by the Er moments in the 4i site (k2 = [1, 0.4667 (1), ]). As the magnetic unit cell cannot be defined in the latter case, the figure presents a selected volume that is sufficient to demonstrate the basic pattern of this structure. The left-hand side of the figure shows a perspective view while the right-hand side presents its projection on the ac plane. |