Structural and dielectric properties of Ba0.8Sr0.2Ti0.96Sn0.04O3 ceramics.

Perovskite type ceramics Ba_0.8Sr_0.2Ti_0.96Sn_0.04O₃, a relaxor composition prepared through solid state reaction route and calcinated at temperature is 1400°C for 3 hours with intermediate mixing. The room temperature XRD study suggests that all the samples have the tetragonal symmetry with space group p4mm. The pellets were sintered at 1400°C for 3 hrs. The dielectric measurements at different frequency show that dielectric constant increases near T_c. Loss factor was decreased with increasing temperature but continue to increase as the temperature further increase above 100°C. [ABSTRACT FROM AUTHOR]