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. 2020 Jan 31;8:35. doi: 10.3389/fchem.2020.00035

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Copyright © 2020 Veronese, Patrini, Bajoni, Ciarrocchi, Quadrelli and Malavasi.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Indexed X-ray diffraction patterns of the Cs₂SnX₆ (X = Cl, Br, Br_0.5I_0.5, and I) samples. Vertical bars in each pattern refer to the calculated cubic structure. (B) Pattern zoom in the region around the (222) reflection for the Cs₂SnX₆ samples highlighting the peak shift from higher to lower angle by replacing Cl for I. (C) Trend of the cubic lattice parameter as a function of chemical composition for the Cs₂SnX₆ samples.