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Exceptional Layered Ordering of Cobalt and Iron in Perovskites

Abstract : A study is conducted to demonstrate exceptional layered ordering of cobalt and iron in perovskites. This exceptional type of cationic ordering suggests that the oxygen stoichiometry may play a role in its stabilization, resulting from the alternate stacking of double perovskite slices YBaCo2O5 and triple perovskite slices with the ideal composition YBa2Fe3O8. Annular bright field STEM (ABF-STEM) imaging has been carried out to understand the distribution of oxygen vacancies in the structure.
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Submitted on : Tuesday, July 16, 2019 - 11:31:40 AM
Last modification on : Friday, October 25, 2019 - 8:50:03 AM

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O.I. Lebedev, S. Turner, V. Caignaert, V.A. Cherepanov, B. Raveau. Exceptional Layered Ordering of Cobalt and Iron in Perovskites. Chemistry of Materials, 2016, 28 (9), pp.2907-2911. ⟨10.1021/acs.chemmater.6b01046⟩. ⟨hal-02184743⟩



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