The melting curve of iron at the pressures of the Earth's core from ab initio calculations
Article Abstract:
The use of ab initio methods to calculate the free energies of solid and liquid iron has produced a theoretical melting curve that can be seen as being similar in accuracy to melting curves obtained from high-pressure experiments. For the given generalized-gradient approximation expression for electronic exchange-correlation energy, tests on all sources of technical and statistical error show a precision of better than 15 meV per atom on the separate Gibbs free energies of solid and liquid. This research gives a melting temperature of iron of around 6,700 K plus or minus 600 K at the pressure of the inner-core boundary.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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The Earth's 'missing' niobium may be in the core
Article Abstract:
A new study investigates niobium's properties and reveals that at high pressure it divides into liquid metal and silicate in a similar way to vanadium.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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Constraints on the composition of the Earth's core from ab initio calculations
Article Abstract:
Constraints on the composition of the Earth's core are obtained from ab initio calculations.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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