Lu C.-H.Bai J.-H.Chen H.2019-05-132019-05-13200400222461https://scholars.lib.ntu.edu.tw/handle/123456789/407461The solid solutions of Ba-doped SrBi2Ta2O9 layered perovskite ceramic powders have been successfully prepared via a two-step process using BiTaO4 as a precursor. The lattice constants of the solid solutions monotonically increase with increasing barium-ion content. The sinterability of {Sr1-xBax)Bi 2Ta2O9 powders is significantly improved by increasing the barium-ion content. When the specimens with high barium-ion contents are sintered at 1100¢XC, they thermally decompose to form rod-like grains and the matrix expands, leading to a lower density. The addition of barium ions to SrBi2Ta2O9 also results in significant variation in the morphology of the sintered specimens and the occurrence of c-axis preferred orientation which is ascribed to the anisotropic growth of plate-like grains. The precise control of the barium-ion content as well as the sintering conditions is critical for obtaining densified barium-ion doped SrBi2Ta2O9 ceramics with a pure, layered perovskite structure. ? 2004 Kluwer Academic Publishers.journal article10.1023/B:JMSC.0000025835.22825.5c2-s2.0-3543102775https://www.scopus.com/inward/record.uri?eid=2-s2.0-3543102775&doi=10.1023%2fB%3aJMSC.0000025835.22825.5c&partnerID=40&md5=e8ec42e9f366feed0927ee6655efb549