A PROCESS FOR PREPARATION OF A BARIUM TITANATE BASED COMPOSITION HAVING MEDIUM DIELECTRIC CONSTANT AND TEMPERATURE STABILITY

摘要

The present invention provides a process for preparation of a barium titanate based composition having medium dielectric constant and temperature stability comprising adding 0.3 - 2.0 wt.% of barium titanate ( BaTi03) fluxes containing Li2C2O4, Li2B4O7, H3BO3 and Bi2O3 and Bi2O3 to BaTiO3 powder; adding 0.75 - 2.0 wt.% (BaTiO3) grain growth inhibitors and Curie peak suppressors containing Nb2O5, Bi2 (SnO3)3 and Bi4Ti3O12 to BaTio3 powder ;adding 0.03- 0.2 wt.% (of BaTiO3) acceptor dopants containing MnO2, NiO, CuO, V2O5, and CO3O4 to BaTiO3 powder; mixing the compositions in a ball mill ( agate grinding medium) with 60 - 80, wt% ( of powder mix) % and distilled water for 10 - 20 h; drying the mixture at 100-150°C in an oven for 2 -4 h; calcining the mixture at 600-800°C for 5-10 h ; dry grinding of the calcined powder in a ball mill (agate grinding media) for 5-10 h. to obtain the said composition.