Research of Lead-free Na0.5Bi0.5TiO3-BaTiO3 System Piezoelectric Ceramics

To reduce the coercive field of Na0.5Bi0.5TiO3, BaTiO3 were added as dopant materials. Then the (1−x)Na0.5Bi0.5TiO3-xBaTiO3 ceramic samples were produced in solid synthetic way. The optimum preparation condition and piezoelectric properties of the samples were investigated. The XRD results show that the fabric transites from rhombohedral to tetragonal gradually with the substitution of the Ba2+. The morphotropic phase boundaries (MPB) exists in the composition range of 0.06