Fig. 4: Ex-situ structural and composition characterization of Pd@Pt-Co annealing at 400 °C for 5 min. | Nature Communications

Fig. 4: Ex-situ structural and composition characterization of Pd@Pt-Co annealing at 400 °C for 5 min.

From: The role of surface substitution in the atomic disorder-to-order phase transition in multi-component core–shell structures

Fig. 4

a, AC-STEM image of an individual NP at the atomic level. b, Enlarged image of region #1 marked by white dotted box (scale bar in (b) is 0.5 nm). c, Atomic arrangements of the area selected by the laurel-green dashed box, and corresponding intensity profile. d-g, Detailed composition analysis at atomic scales of region #2 (scale bar in (d, e, f, g) is 0.5 nm), including HAADF-STEM images (d), EDS elemental maps of Pd (e), Pt (f), and Co (g). h-k, Detailed composition analysis at atomic scales of region #3 (scale bar in (h, i, j, k) is 0.5 nm), including HAADF-STEM images (h), EDS elemental maps of Pd (i), Pt (j), and Co (k).

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