Figure 2.
(a) Schematic of an orthorhombic film grown on a (110) oriented orthorhombic substrate. The lattice parameters of the orthorhombic substrate are indicated by subscript “s”. An expanded 2 × 2 × 2 pseudocubic unit cell is marked in the film, with arrows tracing the traditional a and b orthorhombic lattice parameters, denoted by subscript “f”. The angle between these two directions are denoted by γ. (b) Unit cell schematic of the two cross-section views of NdNiO3, along with simulated and experimental PACBED patterns of orthorhombic Pbnm films, showing similar features.