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Figure 1
Schematic drawing of the crystal structure (a) and ECD using MEM distribution of the Bi2O2 (b, c) and the SiO3 layer (d, e) in the ferroelectric (300 K) and paraelectric (773 K) phases. The isosurface of ECD is 0.85 e Å−3 and 1.50 e Å−3 for the Bi2O2 and the SiO3 layer, respectively.

IUCrJ
Volume 1| Part 3| April 2014| Pages 160-164
ISSN: 2052-2525
doi:10.1107/S2052252514008008