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Fig. 1. (Color online) (a) Neutron total scattering structure function Q[S(Q)-1] of Bi4Ti3O12 at 300 K. Here, S(Q) is a reduced powder diffraction intensity and Q is a magnitude of the scattering vector. (b) Pair distribution function (PDF), G(r) of Bi4−xLaxTi3O12 in the r-range of 1.5 ∼ 4.0 Å. The first few PDF peaks corresponding to Ti-O, Bi-O, O-O and Bi-O are marked. Note the variations of PDF peak intensities as La concentration increases. (c) Crystal structure of Bi4Ti3O12. Large magenta balls represent Bi ions and small red balls are oxygen ions. Ti ion resides inside of oxygen octahedron.
New Phys.: Sae Mulli 2021;71:814~818