Synthesis, structure and properties of Ba1-1.5yLaySnxTi1-xO3 solid solutions

A series of Ba1-1.5y LaySnxTi1-x O-3 (0 less than or equal to x less than o r equal to 0.3, 0 less than or equal to y less than or equal to 0.3) solid solutions were synthesized by means of soft chemical method below 100 degre es C. XRD and d - spacing - component figures of the series of the solid so lutions indicated that the products were substitutional ones. TEM showed th at the product was substantially spherical particles with an average diamet er of 70nm. The ceramics prepared fi-om the solid solutions showed that adu lterating with tin and lanthanum in pure BaTiO3 phase obviously improved th e dielectric constant at room temperature.