Intercalation of Lithium and Iodine in the Ferroelectric Layered Compound Bi4Ti3O12-x

The reaction of Bi4Ti3O12-x with lithium iodide under an atmosphere of iodine at 350°C was found to afford an intercalation compound LiI3Bi4Ti3O11-x in high yield. The new bismuth titanate is brownish red in color and formed in an orthorhombic cell with the lattice parameters of a=5.912 (1), b=5.256 (1), and c=36.889 (8) ?. The pathway to the new intercalation compound is proposed on the basis of X-ray, XPS, SEM, and compositional observations.