Influence of spark plasma sintering temperature on piezoelectric properties of PZT-PMnN piezoelectric ceramics
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Being capable of interconverting electrical and mechanical energy, piezoelectric materials are essential for electromechanical devices. In this study, high-performance 0.95Pb(Zr0.52Ti0.48)O3–0.05Pb(Mn1/3Nb2/3)O3 (PZT-PMnN) piezoelectric ceramics were prepared by spark plasma sintering (SPS). We systematically investigated temperature-dependent electrical properties and phase structure of ceramics. The SPS temperature was found to be optimized at 950 °C. PZT-PMnN ceramic sintered at 950 °C possessed high piezoelectric performances, i.e. d33 of 411 pC/N and d33* of 556 pm/V. Furthermore, a high mechanical quality factor Qm (480) and low dielectric loss (0.19%) were obtained. Therefore, the spark-plasma-sintered PZT-PMnN ceramic is a promising candidate for applications.
This study was funded by the National Natural Science Foundation of China (Grant Nos. 51572143, 51602345), the State Key Laboratory of New Ceramics and Fine Processing Tsinghua University (Grant No. KF201512).
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Conflict of interest
The authors declare that they have no conflict of interest.