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Figure 2
An X-ray diffraction profile of PM merged from two circularly averaged diffraction profiles recorded in the low-to-middle angle (from 0° to 17°) (Fig. 1[link]) and middle-to-high angle (from 9° to 30°) regions. The diffraction profile beyond 0.144 Å−1, magnified in the intensity scale, is also shown. The diffraction peaks are visible up to 0.44 Å−1 (a resolution of 2.3 Å). Bars below the diffraction profile are expected positions of diffraction peaks from a hexagonal lattice of plane group p3. The inset shows the magnified profile between 0.20 and 0.25 Å−1 to demonstrate the angular resolution of the system to separate diffraction peaks. Miller indices of reflections (1 1), (2 0), (7 1) and (11 3) shown in Fig. 1[link] are also depicted. The lattice constant of PM at around 110 K was calculated to be 61.03 ± 0.10 Å.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 13| Part 3| April 2006| Pages 281-284
doi:10.1107/S0909049506004766
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