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Original Articles

Microstructure and Electric Properties of (1-x)Bi(Sc0.75Zn0.125Ti0.125)O3-xPbTiO3 Ceramics

, , , , , , & show all
Pages 130-134 | Received 03 Aug 2008, Accepted 31 Dec 2008, Published online: 20 Sep 2010
 

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).

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