Transformation of Mn2O3 from cubic bixbyite to a distorted perovskite structure by treatment under high-pressure high-temperature conditions is presented in the Communication on page 1494 ff. by S. V. Ovsyannikov et al. Annular bright field scanning transmission electron microscopy (ABF-STEM) imaging demonstrates the positions of the Mn and O atomic columns, indicating a heavily distorted octahedral framework in the perovskite-type Mn2O3.
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