LAJMI, Besma; HIDOURI, Mourad; WATTIAUX, Alain; FOURNÈS, Léopold; DARRIET, Jacques; BEN AMARA, Mongi

doi:10.1016/S0925-8388(03)00412-2

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LAJMI, Besma
Laboratoire de Chimie Structurale des Matériaux, Département de Chimie

HIDOURI, Mourad
Laboratoire de Chimie Structurale des Matériaux, Département de Chimie

WATTIAUX, Alain
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Alloys and Compounds. 2003, vol. 361, n° 1-2, p. 77-83

Elsevier

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new potassium iron phosphate K11Fe15(PO4)18O has been synthesized by the flux method and characterized by single-crystal X-ray diffraction. The compound crystallizes in the cubic system with the space group P213 and the cell parameter a=9.917(2) Å. The unit cell contains one formula unit K7.33Fe10(PO4)12O0.66. The structure is closely related to that of the Langbeinite-like compounds, the main difference being the existence of a four-coordinated iron atom in the structure of the oxyphosphate. K11Fe15(PO4)18O adopts a complex three-dimensional network involving corner- and edge-linkage between iron polyhedra, and corner-sharing between phosphorus tetrahedra and iron polyhedra...< Leer menos

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Transition metal compounds

Crystal structure

Mössbauer spectroscopy

Magnetic measurements

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Crystal structure, Mössbauer spectroscopy and magnetic properties of a new potassium iron oxyphosphate K11Fe15(PO4)18O related to the Langbeinite-like compounds

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