The study of the electronic properties of Bi 0.5 Na 0.5 TiO 3 , Bi 0.5 Na 0.5 Ti 0.5 Zr 0.5 O 3 and Bi 0.5 Na 0.5 ZrO 3 compounds and comparing their structures

Structure, optical and magnetic properties of new Bi0.5Na0.5TiO3- SrMnO3−δ solid solution materials

“…In addition, the various absorbance peaks were obtained in the absorbance spectra of SrMnO 3−δ -modified Bi 0.5 Na 0.5 TiO 3 samples, which were suggested for various transitions of the transition level energy of impurity cations. Bi 0.5 Na 0.5 TiO 3 materials with direct transition, wherein in which the electronic band structures were constructed from Bi-6 s , Ti-4 s and O-2 p for conduction band, and the bottom valence band mainly consisting of O-2 p , Na-3 s and Ti-3 d orbitals were theoretically predicted 46,47 . Thus, we used Wood–Tauc method to estimate the value of optical band gap of pure Bi 0.5 Na 0.5 TiO 3 and SrMnO 3−δ -modified Bi 0.5 Na 0.5 TiO 3 samples.…”