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Figure 5
A stack plot of diffraction patterns of ice VI collected on warming the sample. The bottom data set was collected at 80 K; successive scans are at 20 K intervals to 240 K. The heating rate between scans was 2 K min−1. The same counting time (39 min) was used for all data collected between 100 and 240 K; the pattern at 80 K (also shown in Fig. 4[link]), which was counted for 130 min, has been scaled accordingly. For clarity, successive patterns are offset vertically by 200 counts. The breakdown of the sample to a stacking-disordered `cubic ice' by 160 K and its subsequent transformation into poorly crystalline ice Ih by 220 K can be clearly seen. The inset photograph shows the sample on removal from the diffractometer at 240 K.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 51| Part 3| June 2018| Pages 692-705
https://doi.org/10.1107/S1600576718003977
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