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Science 13 September 1963:
Vol. 141. no. 3585, pp. 1035 - 1038
DOI: 10.1126/science.141.3585.1035
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Articles

Mössbauer Spectrum of Iron-57 in Iron Metal at Very High Pressures

M. Nicol 1 and G. Jura 1

1 Department of Chemistry and Inorganic Materials Research Division, Lawrence Radiation Laboratory, University of California, Berkeley

The effect of pressure on the Mössbauer spectrum of Fe57 in iron metal has been studied as the pressure was increased presumably to more than 140 kbar. At pressures up to 120 kbar, a six-line spectrum characteristic of agr-iron was observed. At 140 kbar, a seventh line appeared in the spectrum at -0.12 ± 0.06 mm/sec relative to stainless steel. This line was attributed to the appearance of the high-pressure phase of iron.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)