The effect of pressure and spin on the isotopic composition of ferrous iron dissolved in periclase and silicate perovskite

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dc.creatorRustad, James R.
dc.creatorZarzycki, Piotr
dc.creatorSauceda, Maryali P.
dc.creatorYin, Qing-zhu
dc.date2008-07-29
dc.date.accessioned2026-07-07T09:53:40Z
dc.date.available2026-07-07T09:53:40Z
dc.descriptionWe perform density functional calculations of the equilibrium 57Fe/54Fe ratios for ferrous iron dissolved in periclase and MgSiO3 perovskite at the pressures and temperatures of the Earth's mantle. Pressure increases the partitioning of 57Fe into both phases by a factor of three from the Earth's surface to the core-mantle boundary. In ferropericlase, a large contribution to this increase comes from the electronic transition from high-spin to low-spin iron. Our calculations demonstrate that pressure-induced fractionation can play a major role in determining planetary iron-isotope composition.
dc.description4 pages, 3 figures, 2 tables
dc.identifierhttps://arxiv.org/abs/0807.4742
dc.identifierhttp://arxiv.org/abs/0807.4742
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166036
dc.subjectMaterials Science
dc.titleThe effect of pressure and spin on the isotopic composition of ferrous iron dissolved in periclase and silicate perovskite
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