Abstract
An exploratory Mössbauer spectroscopy study of the Fe-C system in the C rich region, prepared by high pressure-high temperature treatment near the graphite-diamond stability line, was made. The results obtained for the different processing conditions give no evidence of Fe intercalation in graphite. The presence of some water in the cell produced hydrated Fe complexes, which can explain the deleterious effect of water or hydrogen in the high pressure diamond synthesis.
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Oliveira, L.S.d.C., Silva, M.T.X., Vasquez, A. et al. Mössbauer study of small amounts of iron in graphite, around the diamond-graphite pressure-temperature stability region. Hyperfine Interact 66, 267–270 (1991). https://doi.org/10.1007/BF02395873
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DOI: https://doi.org/10.1007/BF02395873