STRUCTURAL CHARACTERIZATION OF Bi6Ti3Fe2O18 OBTAINED BY MOLTEN SALT SYNTHESIS

Magnetoelectric Aurivillius phase Bi6Ti3Fe2O18 is obtained by molten salts synthesis (MSS). A description of the experimental conditions for preparing the compound is given. Scanning electron microscopy observation reveals that obtained crystallites show plate-like shape, with small size dispersion. MSS allows efficient control of crystallites' size. The crystal structure of the investigated phase is analyzed at the Stanford synchrotron powder diffractometer. Results of Rietveld structure analysis are given. Space group is F2mm. Cell parameters (in Á) are: a = 5.4967(2), b = 5.4655(2), c = 49.342(1). Iron ions tend to concentrate in perovskite octahedra far from the bismuth oxide layers.