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. 2020 Oct 13;142(43):18583–18591. doi: 10.1021/jacs.0c08113

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© 2020 American Chemical Society

This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.

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Characterization of synthesized Mo_4/3Y_2/3AlB₂ and Mo_4/3Sc_2/3AlB₂i-MAB phases. (a–c) In-plane chemical ordering of the i-MAB phase is evident from HRSTEM images along the [001], [100], and [11̅0] zone axes, respectively, with corresponding measured (left) and simulated (right) selected-area electron diffraction (SAED). Schematics to the left of each image represent the corresponding atomic arrangements considering the hexagonal R3̅m (no. 166) structure. (d) Rietveld refinement of XRD of the sample assuming space group R3̅m (no. 166). (e and f) In-plane chemical ordering of the Mo_4/3Sc_2/3AlB₂i-MAB phase as evident from HRSTEM images along the [001] and [100] zone axes, respectively.