Synthesis and characterization of ultra fine barium calcium titanate, barium strontium titanate and Ba1−2xCaxSrxTiO3 (x = 0.05, 0.10)

Many desirable features can be brought in when certain ferroelectric materials are doped with calculated amount of foreign atoms. Ba1−2xCaxSrxTiO3 (BCST), Ba0.8Ca0.2TiO3 (BCT) and Ba0.8Sr0.2TiO3 (BST) have been synthesized via Pechini precursor route. It has been found that single phase was formed at 820–860 °C, which was confirmed by the XRD analysis. FTIR studies confirmed the presence of functional groups such as O–H, carboxylate ester and the carbonate in dry samples. Crystallite sizes of these ceramics were calculated by X-ray line broadening analysis, which were also confirmed by SEM studies. EDX studies confirmed the high purity of the synthesized materials.