Effect of composition on the electromechanical properties of PbZr_xTi_(0.9-x)(Cr_(1/5), Zn_(1/5), Sb_(3/5))_(0.1)O_3 ceramics

摘要

The effect of composition on the structure and piezoelectric properties of PbZr_xTi_(0.9-x)(Cr_(1/5), Zn_(1/5), Sb_(3/5))_(0.1)O_3 sintered-samples, with 0.40 < x < 0.49, was investigated. The samples structure was determined by X-ray diffractometry and the piezoelectric properties by the resonance-antiresonance method. A morphotropic phase boundary (MPB) with optimum piezoelectric properties was found around x = 0.45. The maximum electromechanical coupling factor was k_p = 0.64.