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Figure 10
(a) Compressional wave velocity (VP) and shear wave velocity (VS) of Fe3C at 300 K as a function of density, which is corrected for 57Fe enrichment. At pressures below 6 GPa, Fe3C is magnetic (marked by outer circles). At ambient conditions, the VP and VS of the few-crystal sample are 5% and 16% larger than those of the powder sample, respectively, indicating strong anisotropy. (b) Poisson's ratio ν of Fe3C as a function of density. At ambient conditions, Poisson's ratio of the powder sample is larger and closer to the limiting value of 0.5 for liquids.

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