Extended Data Fig. 2: Analysis of seven multi-component metallic nanoparticles.
From: Determining the three-dimensional atomic structure of an amorphous solid
a–g, Representative ADF-STEM images of particles 1–7, respectively. Scale bar, 2 nm. h–n, Local BOO parameters for all atoms in particles 1–7, where the dashed red curves correspond to a normalized BOO parameter of 0.5. The percentage at the top of each panel shows the fraction of disordered atoms in each particle. o, Local BOO parameters of a 3D atomic model cropped from a molecular-dynamics-simulated Cu65Zr35 metallic glass67 used as a reference, from which a normalized BOO parameter of 0.5 (dashed red curve) was chosen as a cut-off to separate crystal nuclei from amorphous structure. For a fair comparison, the 3D atomic model was cropped to have a similar 3D shape and size to the experimental nanoparticle (particle 1). p–v, PDFs of all atoms in particles 1–7, respectively. With decreasing fraction of disordered atoms in the nanoparticles, the peaks in the PDFs become narrower and new peaks corresponding to different crystal planes appear.
