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Figure 4
Schematic representation of the five irrep distortions allowed in the Pbnm configuration, corresponding to M+2, M+3, R+4, R+5 and X+5. Fe/Ru disordered octahedra in purple, the [A/A^{\prime}]-site Sr/Ln cations in green and O atoms in red. As a reference, the simple perovskite cubic cell (red) and the double perovskite orthorhombic cell (black) are also plotted. The polarization vectors are shown by small black arrows.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 68| Part 6| November 2012| Pages 590-601
doi:10.1107/S0108768112044217
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