Canted Antiferromagnetism on Rectangular Layers of Fe2+ in Polymorphic CaFeSeO

Lai, Kwing To; Komarek, Alexander Christoph; Fernandez-Diaz, Maria Teresa; Chang, Pi-Shan; Huh, Sungjoon; Rosner, Helge; Kuo, Chang-Yang; Hu, Zhiwei; Pi, Tun-Wen; Adler, Peter; Ksenofontov, Vadim; Tjeng, Liu Hao; Valldor, Martin

doi:10.1021/acs.inorgchem.6b02098

Datensatz

DATENSATZ AKTIONENEXPORT

Zur Ablage hinzufügen

Bitte beachten Sie, dass eine neuere Version dieses Datensatzes verfügbar ist:
https://pure.mpg.de/pubman/item/item_2444704_7

DetailsÜbersicht

Freigegeben

Zeitschriftenartikel

Canted Antiferromagnetism on Rectangular Layers of Fe²⁺ in Polymorphic CaFeSeO

MPG-Autoren

/persons/resource/persons203024

Lai, Kwing To
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126701

Komarek, Alexander Christoph
Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons205560

Chang, Pi-Shan
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons180421

Huh, Sungjoon
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126819

Rosner, Helge
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126717

Kuo, Chang-Yang
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126666

Hu, Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126506

Adler, Peter
Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126881

Tjeng, Liu Hao
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126889

Valldor, Martin
Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

Externe Ressourcen

Es sind keine externen Ressourcen hinterlegt

Volltexte (beschränkter Zugriff)

Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.

Volltexte (frei zugänglich)

Es sind keine frei zugänglichen Volltexte in PuRe verfügbar

Ergänzendes Material (frei zugänglich)

Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar

Zitation

Lai, K. T., Komarek, A. C., Fernandez-Diaz, M. T., Chang, P.-S., Huh, S., Rosner, H., et al. (2017). Canted Antiferromagnetism on Rectangular Layers of Fe²⁺ in Polymorphic CaFeSeO. Inorganic Chemistry, 56(8), 4271-4279. doi:10.1021/acs.inorgchem.6b02098.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-49BE-2

Zusammenfassung

From stoichiometric amounts of CaO, Fe, and Se, pure powders and single crystals of quaternary Ca-infinity(2)[FeSe2/2O2/2] can be obtained by solid-state reaction and self-flux growth, respectively. The as-synthesized compound exhibits a polymorphic crystal structure, where the two modifications have different stacking sequences of (2)(infinity)[FeSe2/2O2/2](2-) layers. The two polymorphs have similar unit cells but different crystal symmetries (Cmc2(1), and Pnma), of which the former is non-centrosymmetric. Fe is divalent (d(6)) and high-spin, as proven by X-ray spectroscopy, Mossbauer spectroscopy, and powder neutron diffraction data. The latter two, in combination with magnetic susceptibility and specific heat data, reveal a long-range antiferromagnetic spin order (T-N = 160 K) with a minor spin canting. CaFeSeO is an electronic insulator, as confirmed by resistivity measurements and density functional theory calculations. The latter also suggest a relatively small energy difference between the two polymorphs, explaining their intimate intergrowth.