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Komplexe AxByOz‐Oxide mit mehreren Kationen zeigen unterschiedliche Kationenbesetzungen in den A‐ und B‐Stellen. In ihrer Zuschrift auf S. 8074 ff. beschreiben S.‐Y. Chung et al. den konfigurativen Ordnungsprozess in einem AB2O4‐Spinell, der über die transiente Bildung von Frenkel‐Defekten an oktaedrischen Stellen verläuft. Die Rolle dieser Punktdefekte in Kristallen beschränkt sich daher nicht auf...
Using spinel‐type Li(Mn1.5Ni0.5)O4 with two different cations, Mn and Ni, in the oxygen octahedra as a model system, we show that a cation ordering transition takes place through the formation of Frenkel‐type point defects. A series of experimental results based on atomic‐scale observations and in situ powder diffractions along with ab initio calculations consistently support such defect‐mediated...
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