BARIUM TITANATE BASED ACOUSTIC SENSING ELEMENTS

Abstract

Materials with the ability to generate voltage when subjected to mechanical stress, such as PZT and BaTiO3 are used in various applications such as supercapacitors, dielectrics ceramics and catalysts. Barium titanate (BaTiO3) possesses various advantageous properties in terms of its structure, piezoelectricity and ferroelectricity. Yet, to further enhance these properties, barium was substituted with strontium using both sintering and sol-gel methods. Barium strontium titanate (BST) ferroelectric materials have attracted significant interest due to their chemical stability, high permittivity, excellent tunability and minimal dielectric losses. This study demonstrates the synthesis of perovskite BaxSr(1-x)TiO3 materials, with varying strontium content ranging from 0% to 50%, using the sintering and the sol-gel processes. In addition, the samples were examined using scanning electron microscopy (SEM), X-ray diffraction (XRD), differential thermal analysis (DTA) and thermogravimetry analysis (TGA).