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Figure 5
Synchrotron Mössbauer data (black dots) and fit spectra (gray) of almost pure Fe3C at ambient conditions and an Fe3C sample containing iron impurity at high pressures (Table 1[link]). The presence of iron is clearly indicated by the persistence of fast beats in the SMS spectra between 9.3 and 18 GPa, where Fe3C is non-magnetic and b.c.c.-iron is magnetic. At 20 GPa, the b.c.c. (α) to h.c.p. (∊) transition and concurrent loss of magnetism in iron is complete, as indicated by the disappearance of fast beats in the SMS spectrum.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 16| Part 6| September 2009| Pages 714-722
doi:10.1107/S0909049509033731
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