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Figure 6
Crystal structures of ammonia. (a) P213 phase (stable at 1–6 GPa, Z = 4); (b) P21/c phase (stable at 6–8.5 GPa, Z = 4); (c) P212121 phase (stable at 8.5–60 GPa, Z = 4).

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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