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Keshavarz, Samara (author)
Uppsala universitet,Materialteori
Kontos, Sofia (author)
Uppsala universitet,Fasta tillståndets fysik
Wardecki, Dariusz (author)
Stockholms universitet,Institutionen för material- och miljökemi (MMK),Chalmers University of Technology, Sweden; University of Warsaw, Poland,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
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Kvashnin, Yaroslav (author)
Uppsala universitet,Materialteori
Pereiro, Manuel (author)
Uppsala universitet,Materialteori
Panda, Swarup K. (author)
Uppsala universitet,Materialteori
Sanyal, Biplab (author)
Uppsala universitet,Materialteori
Eriksson, Olle, 1960- (author)
Uppsala universitet,Materialteori,Orebro Univ, Sch Sci & Technol, SE-70182 Orebro, Sweden
Grins, Jekabs (author)
Stockholms universitet,Institutionen för material- och miljökemi (MMK),Stockholm Univ, Dept Mat & Environm Chem, S-10691 Stockholm, Sweden
Svensson, Gunnar (author)
Stockholms universitet,Institutionen för material- och miljökemi (MMK),Stockholm Univ, Dept Mat & Environm Chem, S-10691 Stockholm, Sweden
Gunnarsson, Klas (author)
Uppsala universitet,Fasta tillståndets fysik
Svedlindh, Peter (author)
Uppsala universitet,Fasta tillståndets fysik
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 (creator_code:org_t)
2018
2018
English.
In: Physical Review Materials. - 2475-9953. ; 2:4
  • 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  -- Kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)
TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)
NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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