Synthesis and characterization of a new iron phosphate KSrFe2(PO4)3 with a langbeinite type structure
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en
Article de revue
Este ítem está publicado en
Journal of Molecular Structure. 2012, vol. 1030, p. 145-148
Elsevier
Resumen en inglés
Synthesis, crystal structure, Mössbauer spectroscopy and magnetic susceptibility of a new phosphate KSrFe2(PO4)3 are described. This compound crystallizes with the unit cell parameter a = 9.809(2) Å of the cubic space group ...Leer más >
Synthesis, crystal structure, Mössbauer spectroscopy and magnetic susceptibility of a new phosphate KSrFe2(PO4)3 are described. This compound crystallizes with the unit cell parameter a = 9.809(2) Å of the cubic space group P213 and four formula units per cell. Its structure belongs to the well known langbeinite type. It consists of a 3D framework resulting from a corner-sharing between FeO6 octahedra and PO4 tetrahedra. This framework delimits two distinct cavities, statistically occupied by the K+ and Sr2+ ions. The Mössbauer spectroscopy gave clear evidence of the exclusive presence of octahedral Fe3+ ions. The magnetic susceptibility measurements revealed that the compound follows the Curie-Weiss behavior with an experimental effective moment per unit formula μ = 8.16 μB, consistent with the ideal spin only value of 8.37 μB.< Leer menos
Palabras clave en inglés
Inorganic materials
Chemical synthesis
Crystal structure
Magnetic measurements
Mössbauer spectroscopy
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