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Figure 3
Combining SAED and XPD patterns for determining the crystallographic parameters of the (Pb,Bi)1 − xFe1 + xO3 − y modulated structures: (a) defining the basic reciprocal lattice vectors a* and c* (red) and positioning the satellite arrays (blue arrows mark the separation |q|, green arrows mark the separation 2|q| due to centring in (3 + 1)-dimensional space); (b) reciprocal lattice vectors of the satellite reflections with assigned hklm indexes; (c) the same satellite reflection identified on the XPD pattern; (d) Le Bail fit showing a complete indexing of the XPD pattern.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 71| Part 2| March 2015| Pages 127-143
doi:10.1107/S2052520615005466
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