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Figure 3
The displacement modulation of the split M sites along the ×2 direction (approximately b-axis) of sample 7147A (An52.5) and Dul-15-6A (An64) from both X-ray and neutron diffraction. The contours in the background show the electron density map (X-ray) and nuclear density map (neutron). Unlike the structure from X-ray diffraction data, the neutron diffraction refined structures with three-split M site model show that each M site is nearly stationary, with the modulation mainly contributed by the occupancy modulation.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 76| Part 1| February 2020| Pages 93-107
https://doi.org/10.1107/S2052520619017128
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