0.5Pb(Ni1/3Nb2/3)O-3-(0.5 - x)PbTiO3-xPbZrO(3) (x = 0.10-0.20) polycrystalline ceramics were fabricated by solid-state reaction method. The phase structures, microstructure and temperature dependence of the electrical properties were investigated in detail. Both X-ray diffraction and Raman spectroscopy results indicated that the morphotropic phase boundary (MPB) separating tetragonal from rhombohedral phases located around the region with x = 0.14-0.16. Well-saturated ferroelectric P-E loops were obtained for all compositions and the compositions near MPB possessed the relative large remnant polarization P (r) behavior24 mu C/cm(2) and low coercive field E (c) behavior 5 kV/cm. High performance of electric-induced-strain property with (S (max) /E (max) ) up to 1,140 pm/V could be achieved in the composition with x = 0.15. When the content of PbZrO3 was 14 mol%, the ceramics showed slightly lowered piezoelectric coefficient of 898 pm/V. But excellent temperature stability of piezoelectric property was exhibited that the changed < 10 % when the temperature increased from room temperature to 120 A degrees C. The piezoelectric property of this solid solution makes it promising for application in multilayer piezoactuators.
1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China 2.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
Zhou, Jia-Jun,Wang, Ke,Li, Jing-Feng,et al. Temperature-dependent electrical properties of 0.5Pb(Ni1/3Nb2/3)O-3-(0.5-x)PbTiO3-xPbZrO(3) piezoceramics near the morphotropic phase boundary[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2014,25(6):2540-2545.