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Figure 11
Stacking of layers A, B, [\overline {\rm B}] and C along [010]. The yellow rectangle indicates a monoclinic repetition unit compatible with which spreads over 25 × 1 × 18 basic unit cells and contains 13 layers A, two layers B, two layers [\overline{\rm B}] and one layer C stacked in the sequence [{\rm{CAAABAA}}\overline {\rm{B}} {\rm{AAABAA}}\overline {\rm{B}} {\rm{AAA}}]. The screw axes and centers of symmetry of space group P121/m1 are emphasized.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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