Paper Title
Influence of La (A-site) and Li (B-site) in BCTZ on Phase, Nanostructure and Piezoelectric Properties for Energy Applications

Perovskite structured (Ba0.8La0.1Ca0.1)(Ti0.9Zr0.1)O3 (BLaCTZ) and (Ba0.8La0.1Ca0.1)(Ti0.8Li0.1Zr0.1)O3 (BLaCTLiZ) ceramics were developed from nanopowderssynthesized by hydrothermal method. Powder X-ray diffraction (XRD) patterns indicated the pseudo-cubic phase structure in BLaCTZ and BLaCTLiZ ceramic systems. Transmission electron microscopy (TEM) studies revealed that the nanoparticles in both systems are almost spherical, and nanoparticles sizes are ranged between 18 to 68 nm. Scanning electron micrograph (SEM) of BLaCTZceramicshowed that homogenous, well-grown and dense grains whereas,BLaCTLiZceramics showed mixed trend of granular and porous microstructure, which could be attributed to Li doping. The dielectric constant (eRT) measured at room temperature and 1 kHz were 3947 and 4208, dielectric loss (Tan dRT) were 0.0028 and 0.0014 for BLaCTZ and BLaCTLiZ ceramics, respectively. The piezoelectric charge coefficient (d33) were 239pC/N and 196 pC/N for BLaCTZ and BLaCTLiZceramics, respectively. Thus, BLaCTLiZ system can be optimum member for piezoelectric energy harvesting and, also useful for electrode material in futuristic Fuel Cell technologies. Keywords - BCTZ; Perovskite; Piezoelectric; Hydrothermal; XRD; Dielectric Properties, Piezoelectric Properties, Fuel Cells