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Abstract
(1-x)Bi(Sc 0.75 Zn 0.125 Ti 0.125 )O 3 −xPbTiO 3 (BSZPTx, x = 0.50–0.60) piezoelectric ceramics were prepared by using conventional mixed oxide ceramic processing. A rhombohedral/tetragonal morphotropic phase boundary (MPB) of BSZPTx was observed in the vicinity of x = 0.56. For the composition near MPB, BSZPTx, ceramics reveals the maximum planar electromechanical coupling factor kp and piezoelectric constant d 33 of 0.47 and 320 pC/N, respectively. The temperature dependence of dielectric constant of BSZPTx ceramics reveals the Curie temperature TC of BSZPTx increases with increasing of PbTiO 3 content, and reaches up to 445°C for x = 0.60. BSZPTx ceramics may be used for making high temperature piezoelectric acceleration sensors.
Acknowledgment
This work was supported by the Natural Science Foundation of China (NSFC) (60771066) and National Key Project of China (G200514).