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A systematic study of 4d and 5d transition metal mediated exchange coupling between Fe and Gd nanolaminates
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.ORCID iD: 0000-0002-5008-8165
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.ORCID iD: 0000-0002-3687-4223
2017 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 29, no 46, article id 465802Article in journal (Refereed) Published
Abstract [en]

We present a systematic study of the magnetic coupling between iron and gadolinium layers intermediated by 4d and 5d transition metals using density functional theory. We demonstrate that it is possible to find a magnetic coupling for most of them. In particular, for the early transition metals (d(1), d(2), d(3) and d(4)), a ferromagnetic coupling occurs even stronger than the 3d interlayers. Atomic size and the electronic configuration of the transition metals are crucial for the nature of the coupling. All the open shell transition metals present induced magnetic moments. By increasing the number of interlayers, an oscillating behavior in the magnetic coupling was found and the magnetic coupling goes to zero beyond four spacer layers. Using Monte Carlo simulations, we demonstrate that the interlayer strongly enhances the critical temperature in the Gd layers closest to the interface.

Place, publisher, year, edition, pages
2017. Vol. 29, no 46, article id 465802
Keywords [en]
magnetism, interface, high saturation magnetisation
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-340682DOI: 10.1088/1361-648X/aa8f1eISI: 000413571000001PubMedID: 29057756OAI: oai:DiVA.org:uu-340682DiVA, id: diva2:1180130
Funder
Swedish National Infrastructure for Computing (SNIC)Available from: 2018-02-05 Created: 2018-02-05 Last updated: 2018-02-05Bibliographically approved

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Autieri, CarmineSanyal, Biplab

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