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Inducing magnetism in non-magnetic alpha-FeSi2 by distortions and/or intercalations
Russian Acad Sci, Krasnoyarsk Sci Ctr, Fed Res Ctr, Kirensky Inst Phys,Siberian Branch, Krasnoyarsk 660036, Russia..ORCID iD: 0000-0003-0744-4205
Russian Acad Sci, Krasnoyarsk Sci Ctr, Fed Res Ctr, Kirensky Inst Phys,Siberian Branch, Krasnoyarsk 660036, Russia..
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics. KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology. KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Computational Thermodynamics.ORCID iD: 0000-0002-9920-5393
Russian Acad Sci, Krasnoyarsk Sci Ctr, Fed Res Ctr, Kirensky Inst Phys,Siberian Branch, Krasnoyarsk 660036, Russia..
2019 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 21, no 25, p. 13835-13846Article in journal (Refereed) Published
Abstract [en]

By means of hybrid ab initio + model approach we show that the lattice distortions in non-magnetic alpha-FeSi2 can induce a magnetic state. However, we find that the distortions required for the appearance of magnetism in non-magnetic alpha-FeSi2 are too large to be achieved by experimental fabrication of thin films. For this reason we suggest a novel way to introduce magnetism in alpha-FeSi2 using "chemical pressure" that is, intercalating the alpha-FeSi2 films by light elements. Theoretical study of the distortions resulting from intercalation reveals that the most efficient intercalants for formation of magnetism and a high spin polarization are lithium, phosphorus and oxygen. Investigation of the dependency of the magnetic moments and spin polarisation on the intercalation atoms concentration shows that the spin polarization remains high even at small concentrations of intercalated atoms, which is extremely important for modern silicate technology.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY , 2019. Vol. 21, no 25, p. 13835-13846
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-255408DOI: 10.1039/c9cp02361eISI: 000473056500040PubMedID: 31211304Scopus ID: 2-s2.0-85068369423OAI: oai:DiVA.org:kth-255408DiVA, id: diva2:1342849
Note

QC 20190814

Available from: 2019-08-14 Created: 2019-08-14 Last updated: 2019-08-14Bibliographically approved

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Korzhavyi, Pavel A.

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