Preparation and characterization of Zn-modified CaBi4Ti4O15 piezoelectric ceramics with lower sintering temperature

The Ca0.85(LiCe)0.075Bi4Ti4−xZnxO15 ceramics are prepared via solid‐state reaction method with lower sintering temperature. The influence of lower sintering temperatures (Ts) on structural and electrical properties is investigated. The repressed volatilization of Bi3+ reduces the impurity phase proportion and oxygen vacancies content in ceramics, which might lead to increased TC value (~ 800 °C), piezoelectric constant d33 value (20 pC/N), high resistivity (6.32 × 105 Ω·cm at 600 °C), and good thermal stability up to 600 °C. Therefore, the Zn-modified ceramics are perceived to be one of promising candidates for high-temperature piezoelectric devices.