Piezoelectric Properties of Pb_0.98Bi_0.02Zr_0.51Ti_0.48Zn_0.01O₃ Ceramics

Abstract

On the basis of eutectic behavior of PbTiO3–PbZrO3–Bi(Zn0.5Ti0.5)O3 ternary system, perovskite-structured Pb0.98Bi0.02Zr0.51Ti0.48Zn0.01O3 ceramics were able to be prepared using conventional electronic ceramic processing at low sintering temperature compatible with Ag as inner electrode materials, promising for co-firing technology to fabricate monolithic multilayer piezoelectric transducers. The dependence of its piezoelectric properties on sintering temperature and various dopants were investigated experimentally and a piezoelectric property with dielectric constant of ε33 T /ε0=1190, dielectric loss of tan δ=0.6%, piezoelectric coefficient of d 33=270 pC/N, planar coupling coefficient of k p=0.54, thickness coupling coefficient of k t=0.46 and Curie temperature of T c=346 °C was obtained for the 0.5% Co-doped Pb0.98Bi0.02Zr0.51Ti0.48Zn0.01O3 ceramics sintered at 950 °C.

Piezoelectric Properties of Fine-Grained Pb(Mg1/3Nb2/3)O3–Pb(Zr,Ti)O3–Bi(Zn1/2Ti1/2)O3Quaternary Solid Solution Ceramics

“…Our previous reports experimentally demonstrated that adding Bi(Zn 0:5 Ti 0:5 )O 3 into the Pb(Zr,Ti)O 3 system could reduce the sintering temperature downward 900 C to obtain ceramics with relative density of 94%. 17,18) It is well known that the final density of ceramics is determined by the density ( 0 ) of green pellets and shrinkage rate (Ál=l) after sintering process through ¼ 0 ð1 À ðÁl=lÞ 3 Þ. Under the processing conditions used here, the relative density more than 94% is obtained when the shrinkage rate Ál=l larger than 12%.…”

“…In comparison, those for the PMN0PT48 from our previous report, 18) PZT-4, PZT-5A, and PZT-5H from IEEE standards were also presented. From Table I, it was seen that good piezoelectric properties being similar to those commercial ceramics obtained with high sintering temperature above 1200 C are able to be obtained in a lower sintering temperature window for these PMN-PZT-BZT ceramics, and varying PMN content could modify piezoelectric properties to a great extent.…”

“…Piezoelectric properties of the PMN14PT45, PMN37PT39, and PMN375PT387 ceramics sintered at different conditions. In comparison, those for the PMN0PT48 from our previous report, 18) PZT-4, PZT-5A, and PZT-5H from IEEE standards were also presented.…”

“…Recent years, the author group illustrated experimentally that Pb(Zr,Ti)O 3 -Bi(Zn 0:5 Ti 0:5 )O 3 (PZT-BZT) and PbTiO 3 -BiFeO 3 -Bi(Zn 0:5 Ti 0:5 )O 3 ternary solid solutions exhibit an intrinsic low sintering temperature below 1000 C with conventional electroceramic processing. [17][18][19][20][21] The Pb 0:85 Bi 0:15 -(Zr 0:442 Ti 0:483 Zn 0:075 )O 3 ceramics sintered at 1000 C were reported with T C ¼ 312 C, " 33 T =" 0 ¼ 1325, and d 33 ¼ 319 pC/N. 17) And the 0.5% Co-doped Pb 0:98 Bi 0:02 Zr 0:51 -Ti 0:48 Zn 0:01 O 3 ceramics sintered at 950 C exhibited piezoelectric properties with T C ¼ 346 C, " 33 T =" 0 ¼ 1190, tan ¼ 0:6%, d 33 ¼ 270 pC/N, k p ¼ 0:54, and k t ¼ 0:46.…”

“…17) And the 0.5% Co-doped Pb 0:98 Bi 0:02 Zr 0:51 -Ti 0:48 Zn 0:01 O 3 ceramics sintered at 950 C exhibited piezoelectric properties with T C ¼ 346 C, " 33 T =" 0 ¼ 1190, tan ¼ 0:6%, d 33 ¼ 270 pC/N, k p ¼ 0:54, and k t ¼ 0:46. 18) Recently, the 0.5% Co-doped Pb 0:98 Bi 0:02 Zr 0:51 Ti 0:48 -Zn 0:01 O 3 ceramics has been experimentally demonstrated to be compatible with Ag electrode, more than 40 layers monolithic piezoceramic transducers with Ag as inner electrode were manufactured at 930 C cooperatively with Shaanxi Kanghong New Material Technology. As an illustration, one SEM microstructure image of fracture surface of our manufactured monolithic multilayer piezoelectric transducer was presented in Fig.…”