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Perovskite ceramics [Ba0.8Sr0.2]1−x[Bi1−yYy]xTi1−xFexO3 with x = 0.3 and 0.05 < y < 0.15 are synthesized by solid-state solution in order to study the effect of yttrium insertion on the physical properties of this material. The XRD patterns showed the formation of single tetragonal phase without any impurities. Using UV–Vis spectroscopy, the absorbance and reflectance are highlighted. In fact,...