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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
View of the crystal structure of the SrMo1−xMgxO3−δ oxides, defined in a simple-cubic, primitive unit cell, showing the evolution of the thermal ellipsoids for oxygen atoms between (a) 200 °C and (b) 800 °C.