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Figure 3
HMT-C7 reciprocal-space reconstruction of the (h 5 l) layer for Phase I and the (h 4 l) layer for Phases II and III. For Phase I, diffuse scattering rods along [{\bf a}_{\rm I}^{*}] are particularly visible according to [(\delta \, 4 \,{{5}\over{2}})], with [\delta] continuous. Phase II is characterized by the unusual distribution of reflection intensities. Note that superstructure peaks have emerged from diffuse streaks of Phase I. Phase III together with a schematic representation of its two twinned domains is reported. The corresponding class reflections are indicated as well as the unit cell of both domains. Here again the superstructure reflections are located on the diffuse streaks of Phase I.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 59| Part 4| July 2003| Pages 527-536
doi:10.1107/S0108768103011297
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