摘要
Bismuth-modified barium calcium zirconate titanate ceramics [(Ba1鈭?m>xm>/2Bim>xm>)0.85Ca0.15](Ti0.90Zr0.10)O3 (BBCTZ) have been prepared by the conventional solid-state reaction method, and effects of Bi content on the electrical properties of BBCTZ ceramics were systematically investigated. BBCTZ ceramics endure a phase transition from the coexistence of rhombohedral and tetragonal phases, a tetragonal phase, to a cubic phase with increasing Bi content. The Curie temperature, the remanent polarization, and the dielectric loss of BBCTZ ceramics gradually decrease with increasing the Bi content. The BBCTZ ceramic with m>xm> = 0.0075 exhibits an optimum electrical behavior: m>dm>33 鈭?#xA0;361 pC/N and m>km>p 鈭?#xA0;40.2%.