Temperature-Insensitive Piezoelectric Performance in Pb(Zr0.52Ti0.42Sn0.02Nb (0.04))O-3 Ceramics Prepared by Spark Plasma Sintering

摘要

Dense Pb(Zr0.52Ti0.42Sn0.02Nb0.04)O-3 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 degrees C. Reliable performance against temperature was observed. First, high strain behavior with a normalized strain d(33)(star) of 640 and 710 pm/V occurred at 25 and 150 degrees C, respectively, varying less than 11%. Besides, a large remnant polarization P-r of 36.9 mu C/cm(2) is observed at room temperature and varies less than 18% within the temperature range of 25-150 degrees C. In addition, an enhanced piezoelectric coefficient d(33) of similar to 460 pm/V was attained at a high temperature of 150 degrees C, manifesting a 40% enhancement with respect to the d(33) value (330 pm/V) obtained at room temperature.