Relative orientation of the unit cell of the prototype cubic simple perovskite ( $P m \overline{3} m$)(blue), of the prototype cubic double perovskite $(F m \overline{3} m)$ (dashed line), and the distorted monoclinic $P 2_{1} / n$ of the double perovskite (solid line).
Relative orientation of the unit cell of the prototype cubic simple perovskite ( P m \overline{3} m)(blue), of the prototype cubic double perovskite (F m \overline{3} m) (dashed line), and the distorted monoclinic P 2_{1} / n of the double perovskite (solid line).