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Figure 1
The h = 6 plane of the reciprocal space for Sr3B2 + xSi1 − xO8 − x/2, x = 0.78 (a). Partially overlapped profiles of 60–410 and 60–401 satellites are presented in the lower-left corner. The modulated crystal can be described in the superspace either as a (3 + 2)-dimensional orthorhombic single crystal (b, left) or a (3 + 1)-dimensional monoclinic twin (b, right), with reciprocal lattices that are turned around the c* axis through 180°.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 71| Part 5| September 2015| Pages 489-497
doi:10.1107/S2052520615011713
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