Fig. 3: Dynamical evolution of an individual Pd@Pt-Co cube during in-situ heating. | Nature Communications

Fig. 3: Dynamical evolution of an individual Pd@Pt-Co cube during in-situ heating.

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

Fig. 3

a–r Sequential HAADF-STEM images (scale bar in (a, d, g, j, m, p) is 5 nm), corresponding FFT patterns (scale bar in (b, e, h, k, n, q) is 5 nm−1), and inverse FFT images (scale bar in (c, f, i, l, o, r) is 5 nm) derived from the superlattice spots marked with pink circles in FFT images were acquired at 445 °C (a–c), 450 °C (d–f), 455 °C (g–i), 460 °C (j–l), 465 °C (m–o), and 470 °C (p–r), respectively. The blue dashed lines mark the outline of the NP, and the orange lines mark the interface between the core and shell. The blue and pink circles, and corresponding text refer to the diffraction features of disordered and ordered phases, respectively. The pink regions in IFFT images indicate the ordered structure, where the color scale originates from the amount of ordered structure.

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