Structures and electrical properties of BaTiO3 based ferroelectric doped lanthanum oxide

Abstract

This research study investigated the structure and electrical effect of the La3+ and Sm3+ co-modified BaTiO3 ceramics, with formula Ba1-(x-y)(LaxSmyTi)O3. The concentration of of x was fixed at 0.010 while that of y varied from 0.010 to 0.040. The ceramics are prepared by a solid-state mixed-oxide technique. The phase formation behavior is studied using x-ray diffraction (XRD), The dielectric properties with temperature are broad as wide temperature rang. Results showed that co-modified BaTiO3 ceramic ratio of 0.010 to 0.020, still tetragonal structure where the A-site is disturbed by a group of rare-earth doped. In addition, we also found that the dielectric constant increases with ratio of 0.010 to 0.020 and respond to higher frequencies, that can be used in the application's circuit with high frequency.