Investigation of La-doped 0.25Pb(Zn 1/3 Nb 2/3 )O 3 -0.75Pb(Zr x Ti 1-x )O 3 ceramics near morphotropic phase boundary
JOURNAL OF ELECTROCERAMICS(2011)
摘要
La-doped 0.25Pb(Zn 1/3 Nb 2/3 )O 3 -0.75Pb(Zr x Ti 1-x )O 3 (x = 0.51–0.57) ceramics were prepared by a conventional mixed oxide method. The piezoelectric and dielectric properties of various compositions near the morphotropic phase boundary (MPB) were investigated. The MPB was determined by X-ray diffraction (XRD) patterns. The optimal properties were obtained in the specimen with Zr/Ti = 53/47: d 33 = 570 pC/N, k p = 0.60, ε r = 3900, tgδ = 1.9%, T c = 204°C, P r = 35.21 μC/cm 2 , E c = 11.62 kV/cm, which means it is a good candidate for applications.
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关键词
PZN-PLZT, MPB, Piezoelectric properties, Dielectric properties
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