LÜ, Minfeng; MENTRE, Olivier; GORDON, Elijah E.; WHANGBO, Myung-Hwan; WATTIAUX, Alain; DUTTINE, Mathieu; TIERCELIN, Nicolas; KABBOUR, Houria

doi:10.1016/j.jmmm.2017.07.026

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LÜ, Minfeng
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

MENTRE, Olivier
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

GORDON, Elijah E.
Department of Chemistry

Langue

Article de revue

Ce document a été publié dans

Journal of Magnetism and Magnetic Materials. 2017, vol. 444, p. 147-153

Elsevier

Résumé en anglais

The layered oxysulfide Sr3Fe2O5Cu2S2 was prepared, and its crystal structure and magnetic properties were characterized by synchrotron X-ray diffraction (XRD), powder neutron diffraction (PND), Mössbauer spectroscopy measurements and by density functional theory (DFT) calculations. In addition, the spin exchange interactions leading to the ordered magnetic structure of Sr3Fe2O5Cu2S2 were compared with those of its selenium analogue Sr3Fe2O5Cu2Se2. The oxysulfide Sr3Fe2O5Cu2S2 adopts a G-type antiferromagnetic (AFM) structure at a temperature in the range 485–512 K, which is comparable with the three-dimensional (3D) AFM ordering temperature, TN ≈ 490 K, found for Sr3Fe2O5Cu2Se2. Consistent with this observation, the spin exchange interactions of the magnetic (Sr3Fe2O5)2+ layers are slightly greater (but comparable) for oxysulfide than for the oxyselenide. Attempts to reduce or oxidize Sr3Fe2O5Cu2S2 using topochemical routes yield metallic Fe.< Réduire

Mots clés en anglais

Layered oxychalcogenides

Antiferromagnetism

Mössbauer

Neutron diffraction

Magnetic structure

DOI

http://dx.doi.org/10.1016/j.jmmm.2017.07.026

Project ANR

Anion Blended Materials Conception - ANR-12-JS08-0012

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026