Structural, thermal and dielectric properties of Ba1-xSrxTiO3 ceramics (x = 0, 0.1 and 0.2).

Ba_1-xSr_xTiO₃ (BST) (x = 0, 0.1 and 0.2) ceramics were prepared by the solid-state reaction method and their structural, thermal and dielectric behavior was studied. The increasing concentration of Sr²⁺ ions leads to shift of Tc toward lower temperature. The results obtained are discussed in terms of microstructural/structural effects of Sr²⁺ incorporation into BaTiO₃. It is shown that E-poling influences the properties under investigation. This includes modification of local structure, dielectric response and temperature of phase transformations. This could be the result of improvement by the electric field of the polarization ordering, previously disordered by the introduction of Sr²⁺ to BaTiO₃. [ABSTRACT FROM AUTHOR]