Coexistence of crystalline npFe⁰ and ilmenite in the 5 hr sample. (a) HAADF image of a npFe⁰ region in the 5 hr sample. (b), (c) Zoomed-in views of selected regions in (a), showing crystalline ilmenite within SSW rims (antiamorphous regions). HAADF images in (b) and (c) are overlaid with the ilmenite lattice along the [1﹩\overline{1}﹩0] zone axis. (d) Fast Fourier transform (FFT)-filtered image of (a) using α-Fe peaks. Inset: FFT of image (a), indicating a 2.03 Å d-spacing, consistent with [111] α-Fe. (e), (f) Selected regions of crystalline npFe⁰ in (d), overlaid with the α-Fe lattice along the [111] zone axis.