Piezoelectric Properties of Fine-Grained Pb(Mg sub(1/3)N sub(2/3))O sub(3)-Pb(Zr,Ti)O sub(3)-Bi(Zn sub(1/2)Ti sub(1/2))O sub(3) Quaternary Solid Solution Ceramics

• Published in: Japanese Journal of Applied Physics 2013-06, Vol.52 (6R)
• Main Authors: Yue, Ruifang, Hou, Xianbo, He, Wenze, Yu, Jian
• Format: Article
• Language: English
• Subjects: Ceramics; Coupling coefficients; Multilayers; Piezoelectric ceramics; Piezoelectricity; Sintering; Solid solutions; Transducers
• ISSN: 0021-4922; 1347-4065
• DOI: 10.7567/JJAP.52.061502

On the basis of solid state reaction eutectic behavior between Pb(Mg sub(1/3)Nb sub(2/3))O sub(3)-Pb(Zr,Ti)O sub(3) (PMN-PZT) and metastable perovskite-type Bi(Zn sub(1/2)Ti sub(1/2))O sub(3) (BZT), perovskite-structured PMN-PZT-BZT quaternary solid solution piezoceramics with various compositions were experimentally demonstrated with an intrinsic low sintering temperature in the windows of 950-1050 [degrees]C. These fine-grained densified PMN-PZT-BZT ceramics were able to be poled sufficiently at room temperature through polarization-electric field hysteresis loop measurement, different from normal poling treatment with DC bias field at high temperature, which will simplify future device processing of monolithic multilayer piezoceramic transducers. A typical piezoelectric property of dielectric constant [varepsilon] sub(33) super(T)/[varepsilon] sub(0) = 3471, piezoelectric constant d sub(33) = 480 pC/N, planar coupling coefficient k sub(p) = 0.41, thickness coupling coefficient k sub(t) = 0.50, mechanical quality factor Q sub(m) = 68 and relaxor ferroelectric phase transition temperature T sub(m) = 167 [degrees]C at 1 MHz was obtained for the fine-grained densified Pb sub(0.96)Sr sub(0.04)(Mg sub(1/3)Nb sub(2/3)) sub(0.37)Zr sub(0.24)Ti sub(0.39 )O sub(3)+3%Bi(Zn sub(0.5)Ti sub(0.5))O sub(3)+2%NiO ceramics sintered at 1020 [degrees]C, which is much promising to manufacture monolithic multilayer piezoelectric transducers with Ag95/Pd5 as inner electrode material.