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Figure 1
Room-temperature 〈[{\overline 1}10]〉 zone-axis EDPs of (a) K3MoO3F3 and (b) SiO2-tridymite above 250°C. The red arrows in (a) show some of the independent `primary' modulation wavevectors required to trace out the observed diffuse distribution around each parent Bragg reflection G.

IUCrJ
Volume 2| Part 1| January 2015| Pages 74-84
ISSN: 2052-2525
doi:10.1107/S2052252514022556