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Figure 1
(a) The effect of tilting of the octahedra about the axis perpendicular to the octahedra plane. (b) The pattern of the X anion shifts with respect to the A cations after tilting. X anions are in red, A cations are in blue. The B cation (black) is located within the octahedra. The pseudocubic unit cell is marked in each case by continuous black lines and the doubled supercell by dashed lines.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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