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. 2020 Aug 28;6(35):eabc2758. doi: 10.1126/sciadv.abc2758

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 1 — (A) Experimental neutron diffraction pattern (black circles) of MgAl₂O₄ modeled with the disordered spinel structure (red line). (B) Experimental pair distribution function (PDF; black circles) of MgAl₂O₄ compared with a simulated PDF calculated from the model refined from the diffraction pattern (red) and one simulated directly from application of Pauling’s first rule (blue) with Shannon’s ionic radii.