Abstract
A new low-temperature sintering modified PbTiO3 piezoelectric ceramic material was prepared by adding Bi(Cd1/2Ti1/2)O3, MnO2, SiO2. The modified PT material has excellent properties such as low-sintering temperature, high piezoelectric activities, large piezoelectric anisotropy, high mechanical quality factor, low dielectric constant and dielectric loss. The main parameters are Kt=0.49, Kp=0.027, Kt/Kp=18.2, d33=65 × 10−12C-N−1, Qm=514, ρv = 7.4 × 103kg−m−3, Tc=312°C, ε T 33/ε0 = 177, tanδ=0.63%. It shows great application prospects in the fields of multilayer piezoelectric filter and multilayer piezoelectric step-down transformer.
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