A comprehensive study of magnetic exchanges ...
Type de document :
Article dans une revue scientifique
URL permanente :
Titre :
A comprehensive study of magnetic exchanges in the layered oxychalcogenides Sr3Fe2O5Cu2Q2 (Q = S, Se)
Auteur(s) :
Lü, Minfeng [Auteur]
Mentre, Olivier [Auteur]
Gordon, Elijah E. [Auteur]
Whangbo, Myung-Hwan [Auteur]
Wattiaux, Alain [Auteur]
Duttine, Mathieu [Auteur]
Tiercelin, Nicolas [Auteur]
Kabbour, Houria [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Mentre, Olivier [Auteur]
Gordon, Elijah E. [Auteur]
Whangbo, Myung-Hwan [Auteur]
Wattiaux, Alain [Auteur]
Duttine, Mathieu [Auteur]
Tiercelin, Nicolas [Auteur]
Kabbour, Houria [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Titre de la revue :
Journal of Magnetism and Magnetic Materials
Pagination :
147-153
Éditeur :
Elsevier
Date de publication :
2017
ISSN :
0304-8853
Mot(s)-clé(s) en anglais :
Layered oxychalcogenides
Antiferromagnetism
Mössbauer
Neutron diffraction
Magnetic structure
Antiferromagnetism
Mössbauer
Neutron diffraction
Magnetic structure
Discipline(s) HAL :
Chimie/Chimie inorganique
Résumé en anglais : [en]
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 ...
Lire la suite >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.Lire moins >
Lire la suite >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.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Projet ANR :
Établissement(s) :
ISEN
Univ. Valenciennes
ENSCL
CNRS
Institut Catholique Lille
Centrale Lille
Univ. Artois
Université de Lille
Univ. Valenciennes
ENSCL
CNRS
Institut Catholique Lille
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
Matériaux inorganiques, structures, systèmes et propriétés (MISSP)
Date de dépôt :
2019-09-25T14:06:00Z
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