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Beating the Miscibility Barrier between Iron Group Elements and Magnesium by High-Pressure Alloying

Title data

Dubrovinskaia, Natalia ; Dubrovinsky, Leonid ; Kantor, Innokenty ; Crichton, Wilson A. ; Dmitriev, Vladimir ; Prakapenka, Vitali B. ; Shen, G. ; Vitos, L. ; Ahuja, R. ; Johansson, B. ; Abrikosov, Igor A.:
Beating the Miscibility Barrier between Iron Group Elements and Magnesium by High-Pressure Alloying.
In: Physical Review Letters. Vol. 95 (2005) Issue 24 . - p. 245502.
ISSN 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.95.245502

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft
Swedish Research Council (VR) Swedish Foundation for Strategic Research (SSF)

Abstract in another language

ron and magnesium are almost immiscible at ambient pressure. The low solubility of Mg in Fe is due to a very large size mismatch between the alloy components. However, the compressibility of Mg is much higher than that of Fe, and therefore the difference in atomic sizes between elements decreases dramatically with pressure. Based on the predictions of ab initio calculations, we demonstrate in a series of experiments in a multianvil apparatus and in electrically and laser-heated diamond anvil cells that high pressure promotes solubility of magnesium in iron. At the megabar pressure range, more than 10 at. % of Mg can dissolve in Fe and then the alloy can be quenched to ambient conditions. A generality of the concept of high-pressure alloying between immiscible elements is demonstrated by its application to two other Fe group elements, Co and Ni.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Professur Materialphysik und Technologie bei extremen Bedingungen
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Professur Materialphysik und Technologie bei extremen Bedingungen > Professur Materialphysik und Technologie bei extremen Bedingungen - Univ.-Prof. Dr. Natalia Doubrovinckaia
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 16 Mar 2016 08:39
Last Modified: 06 Jul 2016 07:18
URI: https://eref.uni-bayreuth.de/id/eprint/31832