Abstract
The objective of this work is to lower the sintering temperature of Ba0.91Ca0.09Ti0.916Sn0.084O3 (BCTS) ceramics without sacrificing the piezoelectric performance. The low-temperature sintering technique has been conducted to prepare the BCTS ceramics by adding two additives of ZnO and MnO2. The ceramics endure a phase transition from a ferroelectric tetragonal phase to a pseudo-cubic relaxor ferroelectric with increasing MnO2 content. The addition of ZnO and MnO2 decreases the sintering temperature greatly, positively affecting their dielectric and piezoelectric properties. An enhanced electrical behavior of d 33 ∼ 495 pC/N, k p ∼ 43.0 %, e r ∼ 5429, and tan δ ∼ 1.54 % has been observed in the ceramic with x = 0.1 wt% when sintered at ~1315 °C. As a result, the method to dope two additives of ZnO and MnO2 can effectively improve the piezoelectric properties of BaTiO3-based ceramics sintered at a low temperature.
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