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Magnetic properties of Ruddlesden-Popper phases Sr3−x Yx (Fe1.25 Ni0.75) O7−δ : A combined experimental and theoretical investigation

Keshavarz, Samara (author)
Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala, Sweden
Kontos, Sofia (author)
Department of Engineering Sciences, Division of Solid State Physics, Uppsala University, Uppsala, Sweden
Wardecki, Dariusz (author)
Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden; Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland; Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
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Kvashnin, Yaroslav O. (author)
Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala, Sweden
Pereiro, Manuel (author)
Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala, Sweden
Panda, Swarup K. (author)
Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala, Sweden
Sanyal, Biplab (author)
Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala, Sweden
Eriksson, Olle, 1960- (author)
Örebro universitet,Institutionen för naturvetenskap och teknik,Department of Physics and Astronomy, Division of Materials Theory, Uppsala University, Uppsala, Sweden
Grins, Jekabs (author)
Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden
Svensson, Gunnar (author)
Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden
Gunnarsson, Klas (author)
Department of Engineering Sciences, Division of Solid State Physics, Uppsala University, Uppsala, Sweden
Svedlindh, Peter (author)
Department of Engineering Sciences, Division of Solid State Physics, Uppsala University, Uppsala, Sweden
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 (creator_code:org_t)
American Physical Society, 2018
2018
English.
In: Physical Review Materials. - : American Physical Society. - 2475-9953. ; 2:4
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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.

Subject headings

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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