Abstract
The phase structure and piezo/dielectric properties of xPb(In 1/2Nb 1/2)O 3– yPb(Mg 1/3Nb 2/3)O 3– zPbTiO 3 (PIN–PMN–PT x/ y/ z) ternary ceramics with morphotropic phase boundary (MPB) composition were investigated. It was found that Curie temperatures of choosing composition changed from 165 °C to 293 °C and the piezoelectric properties are almost the same at room temperature in PIN–PMN–PT system near MPB. The piezoelectric coefficient d 33 and electromechanical coupling factor k p are higher than 440 pC/N and 60%, respectively. Temperautre and dc bias dependence of piezoelectric response for PIN–PMN–PT ceramics were measured. The usage temperature range was found to be improved, compared with PMN–PT single crystal near MPB.
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