Figure 2
From: Origin of reduced magnetization and domain formation in small magnetite nanoparticles
Atomically resolved HAADF STEM images of representative (a) Sun NP viewed along the [111] zone axis, (b) Colvin NP viewed along the [114] zone axis. (c) Hyeon NP along the [11-2] zone axis, obtained by rigid registration of a stack of images of the same area recorded in quick succession (resulting in high signal-to-noise and precision in the image). Dashed lines in (b) and (c) indicate the presence of the structural defects. (d) Magnified view of the dashed area shown in (c) with overlaid structural model emphasizing the defect region.
