Title of article :
Synthesis and crystal structure of ABW-type SrFe1.40V0.60O4
Author/Authors :
Gstir, Thomas University of Innsbruck - Institute of Mineralogy & Petrography, Austria , Kahlenberg, Volker University of Innsbruck - Institute of Mineralogy & Petrography, Austria , Krüger, Hannes University of Innsbruck - Institute of Mineralogy & Petrography, Austria , Penner, Simon University of Innsbruck - Department of Physical Chemistry, Austria
Abstract :
Single crystals of SrFe1.40V0.60O4, strontium tetraoxidodi[ferrate(III)/vanadate(III)], have been obtained as a side product in the course of sinter experiments aimed at the synthesis of double perovskites in the system SrO–Fe2O3–V2O5. The crystal structure can be characterized by layers of six-membered rings of TO4-tetrahedra (T: FeIII, VIII) perpendicular to [100]. Stacking of the layers along [100] results in a three-dimensional framework enclosing tunnel-like cavities in which SrII cations are incorporated for charge compensation. The sequence of directedness of up (U) and down (D) pointing vertices of neighboring tetrahedra in a single six-membered ring is UUUDDD. The topology of the tetrahedral framework belongs to the zeolite-type ABW.
Keywords :
crystal structure , cation substitution , solid solution , topology , zeolite , ABW
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
