2002
DOI: 10.1029/2002gl015089
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Iron‐Nickel alloy in the Earth's core

Abstract: The phase relations of an Fe10wt%Ni alloy were investigated in a diamond anvil cell up to 86 GPa and 2382 K. Adding nickel into iron stabilizes the fcc phase to higher pressures and lower temperatures compared to pure iron, and a region of two‐phase coexistence between fcc and hcp phases is observed. Iron with up to 10 wt% nickel is likely to be in the hcp structure under inner core conditions. The axial ratio (c/a) of hcp‐Fe10wt%Ni has a weak pressure dependence, but it increases substantially with increasing… Show more

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Cited by 58 publications
(65 citation statements)
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“…However, large temperature gradient and less stable heating are inevitable in the laser-heating technique. Moreover, Lin et al (2002) and Mao et al (2006) did not measure the pressures at high temperatures in their DAC experiments. Dubrovinsky et al (2007) estimated the thermal pressure assuming a constant sample volume upon laser-or internally resistive heating, which still gives large pressure uncertainty at high temperatures, particularly in internally resistive heating, where the pressure-temperature trajectory might be quite complicated (Komabayashi et al 2009).…”
Section: Introductionmentioning
confidence: 89%
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“…However, large temperature gradient and less stable heating are inevitable in the laser-heating technique. Moreover, Lin et al (2002) and Mao et al (2006) did not measure the pressures at high temperatures in their DAC experiments. Dubrovinsky et al (2007) estimated the thermal pressure assuming a constant sample volume upon laser-or internally resistive heating, which still gives large pressure uncertainty at high temperatures, particularly in internally resistive heating, where the pressure-temperature trajectory might be quite complicated (Komabayashi et al 2009).…”
Section: Introductionmentioning
confidence: 89%
“…4 together with previous works in similar compositions (Lin et al 2002;Sakai et al 2011). Note that the data in this study are taken from the hcp stability field, that is, the composition is the same as in the starting material.…”
Section: C/a Ratio Of the Hcp Phasementioning
confidence: 98%
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