Fig. 2
From: Material structure, properties, and dynamics through scanning transmission electron microscopy
Measurement of oxygen octahedral tilts in BFO using HAADF and BF STEM images. a Schematic of the BFO structure observed along the [110] pc direction. b, c Simultaneously acquired HAADF and BF STEM images overlaid with peak finding results for the atomic columns. Bi (red) and Fe (blue) atomic columns can be defined from the HAADF STEM image (b) and oxygen columns from the BF STEM image (c). d A checkerboard pattern generated from the measurements of the projected tilt angles (± θ) of oxygen octahedra. Reproduced from Kim et al. 2017. Copyright 2017 with permission from Elsevier