Abstract
In this investigation, modified lead zirconate titanate (PZT) piezoceramics with a composition Zr/Ti=53/47 containing 1 mole% Nb were prepared by conventional ceramic technology sintering powder compacts. Modified ceramics were explored as a function of firing temperature to acquire exceedingly good piezoelectric characterizations. Under the processing conditions, calcined at 850degC for 2 h, and then sintered at 1250degC for 2 h, PZT piezoceramic showed the minimum mechanical quality factor Qm 50 and maximum electromechanical coupling factor kp 0.62. A fundamental planar mode appeared and the resonance frequency was around 200 KHz, which was suitable for piezoelectric resonator and filter applications. Besides, we also fabricated a disk-shaped sample stimulated by pulse generator and surveyed the applicability of piezoresponse.
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