Figure 3: Comparison of compression curves.

Upper (a) and lower (b) plots correspond to Pbnm- and Cmcm-CaIrO₃, respectively. The lattice constants a, b, and c are shown in blue, green and red respectively. Solid and dotted lines are drawn for the present data and Tsuchiya’s theoretical data¹⁷, respectively, while symbols are the compression data.