Synthesis, structure, magnetic, optical and Mössbauer properties of Na2FeSn(PO4)3

A. El Bouari (1) , Abdelaziz El Jazouli (1) , Said Benmokhtar (1) , Pierre Gravereau (2) , Alain Wattiaux (2)

1 Laboratoire de Chimie des Matériaux Solides
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

The phosphate Na2FeSn(PO4)3, obtained by solid state reaction, was found to be isotypic with Na2CrTi(PO4)3, with space group R-3c and unit cell parameters a = 8.6617(2)Å, c=22.0161(7)A, V = 1430.47(5)Å3, Z=6. The structural parameters refined using Rietveld method showed that the Na+ ions occupy totally the M1 sites and partially the M2 sites and sharing faces with the [Sn/FeO6] octahedra. The presence of the unique valence of ferric iron in the reported phosphate was confirmed using UV-visible diffuse-reflectance spectroscopy, magnetic measurements and Mössbauer spectroscopy.

Mots clés: Nasicon-phosphates; Rietveld; Na2FeSn(PO4)3; Magnetic measurements; UV–visible; Mössbauer spectroscopy

Domaines: Matériaux

A. El Bouari, Abdelaziz El Jazouli, Said Benmokhtar, Pierre Gravereau, Alain Wattiaux. Synthesis, structure, magnetic, optical and Mössbauer properties of Na2FeSn(PO4)3. Journal of Alloys and Compounds, 2010, 503 (2), pp.480-484. ⟨10.1016/j.jallcom.2010.05.037⟩. ⟨hal-00529849⟩