Synthesis, structure and dielectric properties of Ba1-xSrxMyTi1-yO3 (M = Zr, SN)

A series of Ba1-xSrxMyTi1-yO3 (M = Zr, Sn, 0 less than or equal to x less t han or equal to 0.4, 0 less than or equal to y less than or equal to 0.3) s olid solutions were synthesized with the soft chemical method below 100 deg rees C. XRD pattern and cell parameters-composition figures of the prepared powder demonstrate that they are completely miscible solid solutions based on BaTiO3. Furthermore, TEM shows that they have a shape of uniform, subst antially spherical particles with an average particle size of 70 nm in diam eter. The sintered ceramics of the powder doped with Sr2+ and Zr4+ Or Sn4have dielectric constant eight times higher and dielectric loss thirty per cent lower than those of pure BaTiO3 phase at room temperature.