YAN Jikang, GAN Guoyou, SUN Jialin, CHEN Jingchao

（Kunming University of Science and Technology）

Abstract: The piezoelectric ceramics（PZN－PMS－PZT）with higher performances were prepared by a traditional ceramics process．The effects of Mn with different content on dielectric properites of samples were investigated‚containing dielectric constant of room temperature（ε_Tr）‚temperature dependence of dielectric constant and the curie temperature（T_c）．With Mn content increasing ‚ε_Tr decreases while Tc increases‚because of the internal bias fields．

Keywords: piezoelectric ceramic‚dielectric properties‚curie temperature‚internal bias fields