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Magnetic properties of Ruddlesden-Popper phases Sr3-&: A combined experimental and theoretical investigation
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Stockholm Univ, Dept Mat & Environm Chem, S-10691 Stockholm, Sweden;Univ Warsaw, Fac Phys, Inst Expt Phys, Pasteura 5, PL-02093 Warsaw, Poland;Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
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2018 (English)In: Physical Review Materials, ISSN 2475-9953, Vol. 2, no 4, article id 044005Article in journal (Refereed) Published
Abstract [en]

We present a comprehensive study of the magnetic properties of Sr3-xYx(Fe1.25Ni0.75)O-7(-delta )(0 <= x <= 0.75). Experimentally, the magnetic properties are investigated using superconducting quantum interference device (SQUID) magnetometry and neutron powder diffraction (NPD). This is complemented by a theoretical study based on density functional theory as well as the Heisenberg exchange parameters. Experimental results show an increase in the Ned temperature (T-N) with an increase of Y concentrations and O occupancy. The NPD data reveal that all samples are antiferromagnetically ordered at low temperatures, which has been confirmed by our theoretical simulations for the selected samples. Our first-principles calculations suggest that the three-dimensional magnetic order is stabilized due to finite interlayer exchange couplings. The latter give rise to finite interlayer spin-spin correlations, which disappear above T-N.

Place, publisher, year, edition, pages
2018. Vol. 2, no 4, article id 044005
National Category
Condensed Matter Physics Engineering and Technology
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URN: urn:nbn:se:uu:diva-354116DOI: 10.1103/PhysRevMaterials.2.044005ISI: 000430385300001OAI: oai:DiVA.org:uu-354116DiVA, id: diva2:1220742
Funder
Swedish Research CouncilKnut and Alice Wallenberg FoundationAvailable from: 2018-06-19 Created: 2018-06-19 Last updated: 2018-07-04Bibliographically approved

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Keshavarz, SamaraKontos, SofiaKvashnin, YaroslavPereiro, ManuelPanda, Swarup K.Sanyal, BiplabEriksson, OlleGunnarsson, KlasSvedlindh, Peter

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Keshavarz, SamaraKontos, SofiaKvashnin, YaroslavPereiro, ManuelPanda, Swarup K.Sanyal, BiplabEriksson, OlleGunnarsson, KlasSvedlindh, Peter
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Materials TheorySolid State Physics
Condensed Matter PhysicsEngineering and Technology

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