Figure 5
(a) The magnitude of the buckling, R1z—R2z, of rare earth ions in YMnO3 and YbMnO3. (b) Tilting of in-plane oxygen, O3—O4. The tilting angle is between the O3—O4 bond and the ab plane. (c) Tilting of apical oxygen, O1—O2. The tilting angle is between the O1—O2 bond and the c axis. The dashed lines are fits using a power-law function y = y0|t−tc|p. |