Crystallographic and Spectroscopic Characterization of LnFeTeO6 (Ln = La,Pr,Nd,Sm) Materials

LAVAT, AE; RC MERCADER; ENRIQUE JOSE BARAN

Journal of Alloys and Compounds

Elsevier

Lugar: Amsterdam, Holanda; Año: 2010 vol. 508 p. 24 - 27

0925-8388

   Four mixed oxides of composition LnFeTeO6 (with Ln = La, Pr, Nd, Sm), belonging to a superstructure of the PbSb2O6 structural type, have been prepared by solid state reactions and their unit cell parameters determined by X-ray powder diffractometry. The infrared and Raman spectra of these materials were also recorded and briefly discussed, on the basis of a site-symmetry analysis. The (57)Fe-Mössbauer spectra show that the Fe(III)O6 octahedra present in these materials are not greatly distorted.