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  Long-Range Antiferromagnetic Order on Spin Ladders SrFe2S2O and SrFe2Se2O As Probed by Neutron Diffraction and Mossbauer Spectroscopy

Guo, H., Fernández-Díaz, M.-T., Komarek, A. C., Huh, S., Adler, P., & Valldor, M. (2017). Long-Range Antiferromagnetic Order on Spin Ladders SrFe2S2O and SrFe2Se2O As Probed by Neutron Diffraction and Mossbauer Spectroscopy. European Journal of Inorganic Chemistry, (32), 3829-3833. doi:10.1002/ejic.201700684.

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Guo, Hanjie1, Autor           
Fernández-Díaz, Maria-Teresa2, Autor
Komarek, Alexander Christoph3, Autor           
Huh, Sungjoon2, Autor
Adler, Peter4, Autor           
Valldor, Martin5, Autor           
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2External Organizations, ou_persistent22              
3Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863446              
4Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863435              
5Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863454              

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 Zusammenfassung: Powder neutron diffraction data on spin ladder compounds SrFe(2)Ch(2)O (Ch = S, Se) indicate that their magnetic ground states feature long-range antiferromagnetic spin ordering with k = [0,0,0]. The superexchange interaction is antiferromagnetic across each rung via oxygen but ferromagnetic along the ladders via Ch. At 10 K, the ordered spins point towards the center of the ladders but are faintly canted away from a collinear state. The sizes of the ordered moments are 3.3 and 3.5 mu(B) Fe-1 for SrFe2S2O and SrFe2Se2O, respectively. The polar, heteroleptic, tetrahedral FeCh(3)O coordination suggests an angle of 8 degrees between the local structure polarity and the magnetic moment spin orientation. Mossbauer spectroscopic data confirm the magnetic ordering scenario and indicate that the local Fe-O bond rules the electric field gradient at the Fe-site.

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Sprache(n): eng - English
 Datum: 2017-08-312017-08-31
 Publikationsstatus: Erschienen
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 Identifikatoren: ISI: 000408862500009
DOI: 10.1002/ejic.201700684
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Titel: European Journal of Inorganic Chemistry
  Kurztitel : Eur. J. Inorg. Chem.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Weinheim, Germany : Wiley-VCH
Seiten: - Band / Heft: (32) Artikelnummer: - Start- / Endseite: 3829 - 3833 Identifikator: ISSN: 1434-1948
CoNE: https://pure.mpg.de/cone/journals/resource/954926953810_1