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The small‐polaron hopping model has been used for six decades to rationalize electronic charge transport in oxides. The model was developed for binary oxides, and, despite its significance, its accuracy has not been rigorously tested for higher‐order oxides. Here, the small‐polaron transport model is tested by using a spinel system with mixed cation oxidation states (MnxFe3−xO4). Using molecular‐beam...
For six decades, electronic charge transport in oxides has been described by the small‐polaron hopping model. However, this model was developed for binary oxides only. By characterizing structure, site occupation, and transport, in article number 2004490, Maytal Caspary Toroker, Richard D. Robinson, and co‐workers show that the conventional model is inaccurate for oxides with more than two types...
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