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Temperature-Insensitive Piezoelectric Performance in Pb(Zr 0.52 Ti 0.42 Sn 0.02 Nb 0.04 )O 3 Ceramics Prepared by Spark Plasma Sintering.
ACS Applied Materials & Interfaces 2017 October 5
Dense Pb(Zr0.52 Ti0.42 Sn0.02 Nb0.04 )O3 high-performance piezoceramics were prepared by spark plasma sintering. Phase structure, domain structure, and temperature-dependent electrical properties were systematically investigated. The spark-plasma-sintered ceramics possess a pure perovskite structure with rhombohedral-tetragonal (R-T) phase boundaries and a high Curie temperature of 347 °C. Reliable performance against temperature was observed. First, high strain behavior with a normalized strain d33 * of 640 and 710 pm/V occurred at 25 and 150 °C, respectively, varying less than 11%. Besides, a large remnant polarization Pr of 36.9 μC/cm2 is observed at room temperature and varies less than 18% within the temperature range of 25-150 °C. In addition, an enhanced piezoelectric coefficient d33 of ∼460 pm/V was attained at a high temperature of 150 °C, manifesting a 40% enhancement with respect to the d33 value (330 pm/V) obtained at room temperature.
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