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Impact of magnetism on Fe under Earth's core conditions
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Condensed Matter Theory.ORCID iD: 0000-0001-7531-3210
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
2013 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 87, no 1, 014405- p.Article in journal (Refereed) Published
Abstract [en]

Using a microscopic phenomenological model for longitudinal spin fluctuations (LSFs) based on density functional theory calculations, we demonstrate that under the Earth's core conditions (P approximate to 360 GPa, T approximate to 6000 K), Fe acquires substantial local magnetic moment, up to 1.3 mu(B), for different crystal structure modifications. We demonstrate that the LSFs produce a substantial effect on the magnetic and thermodynamic properties of iron, in particular, its equilibrium volume under solid Earth's core conditions.

Place, publisher, year, edition, pages
2013. Vol. 87, no 1, 014405- p.
Keyword [en]
Inner-Core, 1st-Principles Theory, Potential Model, High-Pressures, Electron-Gas, Iron, Alloys, Phase, Approximation, Temperatures
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-117636DOI: 10.1103/PhysRevB.87.014405ISI: 000313029600004Scopus ID: 2-s2.0-84872223269OAI: oai:DiVA.org:kth-117636DiVA: diva2:602560
Funder
Swedish Research Council, 2009-3619 2010-3187VinnovaEU, European Research Council, 228074
Note

QC 20130201

Available from: 2013-02-01 Created: 2013-02-01 Last updated: 2017-12-06Bibliographically approved

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Belonoshko, Anatoly B.

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Ruban, Andrei V.Belonoshko, Anatoly B.Skorodumova, Natalia V.
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