Interfacial exchange interactions and magnetism of ${\mathrm{Ni}}_{2}\mathrm{MnAl}/\mathrm{Fe}$ bilayers

Interfacial exchange interactions and magnetism of ${Ni}_{2} MnAl / Fe$ bilayers

R. Yanes, E. Simon, S. Keller, B. Nagyfalusi, S. Khmelevsky, L. Szunyogh, and U. Nowak

Phys. Rev. B 96, 064435 – Published 29 August 2017

Abstract

Based on multiscale calculations combining ab initio methods with spin dynamics simulations, we perform a detailed study of the magnetic behavior of ${Ni}_{2} MnAl / Fe$ bilayers. Our simulations show that such a bilayer exhibits a small exchange bias effect when the ${Ni}_{2} MnAl$ Heusler alloy is in a disordered B2 phase. Additionally, we present an effective way to control the magnetic structure of the ${Ni}_{2} MnAl$ antiferromagnet, in the pseudo-ordered B2-I as well as the disordered B2 phases, via a spin-flop coupling to the Fe layer.

Received 10 April 2017

DOI:https://doi.org/10.1103/PhysRevB.96.064435

Physics Subject Headings (PhySH)

Antiferromagnetism First-principles calculations Magnetic interactions

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

R. Yanes¹, E. Simon², S. Keller¹, B. Nagyfalusi³, S. Khmelevsky⁴, L. Szunyogh^2,5, and U. Nowak¹

¹Department of Physics, University of Konstanz, D-78464 Konstanz, Germany
²Department of Theoretical Physics, Budapest University of Technology and Economics, Budafoki út 8, H-1111 Budapest, Hungary
³Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, P.O. Box 49, H-1525 Budapest, Hungary
⁴Center for Computational Materials Science, Institute for Applied Physics, Vienna University of Technology, Wiedner Hauptstrasse 8, A-1060 Vienna, Austria
⁵MTA-BME Condensed Matter Research Group, Budafoki út 8, H-1111 Budapest, Hungary

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Vol. 96, Iss. 6 — 1 August 2017

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Physical Review B

covering condensed matter and materials physics

Interfacial exchange interactions and magnetism of ${Ni}_{2} MnAl / Fe$ bilayers

R. Yanes, E. Simon, S. Keller, B. Nagyfalusi, S. Khmelevsky, L. Szunyogh, and U. Nowak

Phys. Rev. B 96, 064435 – Published 29 August 2017

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

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Physical Review B

covering condensed matter and materials physics

Interfacial exchange interactions and magnetism of Ni2MnAl/Fe bilayers

R. Yanes, E. Simon, S. Keller, B. Nagyfalusi, S. Khmelevsky, L. Szunyogh, and U. Nowak

Phys. Rev. B 96, 064435 – Published 29 August 2017

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

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Interfacial exchange interactions and magnetism of ${Ni}_{2} MnAl / Fe$ bilayers