Inorganic Chemistry
Inorganic Chemistry
5 years ago

Structural Modification of the Cation-Ordered Ruddlesden–Popper Phase YSr2Mn2O7 by Cation Exchange and Anion Insertion

Structural Modification of the Cation-Ordered Ruddlesden–Popper Phase YSr2Mn2O7 by Cation Exchange and Anion Insertion
P. Shiv Halasyamani, Weiguo Zhang, Alexandra S. Gibbs, Ronghuan Zhang, Michael A. Hayward
The a−b0c0/b0a−c0-distorted framework of the n = 2 Ruddlesden−Popper phase YSr2Mn2O7 resists changing symmetry upon either 50% Ca−for−Sr substitution or fluorine insertion. Substituting 75% of the strontium for calcium finally leads to a symmetry change to a novel a−b−c−/b−a−c− distortion arrangement space group P21/n11). The resilience of the a−b0c0/b0a−c0 framework of YSr2Mn2O7 to resist symmetry-changing deformations as its composition is changed is attributed to the A-site cation order of the lattice.

Publisher URL: http://dx.doi.org/10.1021/acs.inorgchem.7b01525

DOI: 10.1021/acs.inorgchem.7b01525

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