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. 2022 Aug 10;608(7922):310–316. doi: 10.1038/s41586-022-04935-3

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Extended Data Fig. 1 — a, Overview of a STEM lamella showing the variation in particle morphology near the grain boundary. b, Enlarged view (red frame in a) showing particles inside the grains and along the GBs as well as their respective EDS elemental maps. c, Enlarged view (orange frame in a) illustrating a heterogeneous non-coherent particle at the triple junction of GBs and its EDS elemental maps. d, Atomically resolved HAADF-STEM micrographs and fast Fourier transforms of representative matrix and particle regions, indicating that the particles (ordered, bright) are coherent with the matrix (disordered, dark). The micrographs were obtained along the [011] zone axis. e, Comparison of the average chemical composition of different particles and the matrix determined by the EDS mapping. GB, grain boundary.