Low-temperature sintered Pb(Zr,Ti)O3-Pb(Mn,Sb)O3-Pb(Zn,Nb)O3 for multilayer ceramic actuators
- Low-temperature sintered Pb(Zr,Ti)O3-Pb(Mn,Sb)O3-Pb(Zn,Nb)O3 for multilayer ceramic actuators
- Dandan Wan; Qian Li; 최주영; 최지원; Ying Yang; 윤석진
- Low temperature sintering; Multilayer ceramic actuators; Piezoelectrics
- Issue Date
- Japanese Journal of Applied Physics, Part 1- Regular Papers
- VOL 49, NO 7, 071503-1-071503-6
- A quaternary 0.90Pb(Zr0.48Ti0.52)O3–0.05Pb(Mn1/3Sb2/3)O3–0.05Pb(Zn1/3Nb2/3)O3 (0.90PZT–0.05PMS–0.05PZN) piezoelectric ceramic was
synthesized by a conventional method, and CuO was adopted to lower its sintering temperature. The crystal structure, micromorphology, and
electrical properties were studied in terms of CuO content. The results indicate that 1.0 wt% CuO addition significantly improves the sinterability
of 0.90PZT–0.05PMS–0.05PZN ceramics, lowering the sintering temperature to 900℃ and maintaining moderate electrical properties.
d33 = 306 pC/N, Qm = 997, kp = 53.6%, tan δ = 0.50%, and "T
33/"0 = 1350. The low-temperature sintering behavior could be explained by the
formation of a transient liquid phase by CuO during sintering. Moreover, the endothermic peak at about 950℃C in the differential thermal analysis
(DTA) curve of the raw ceramic powder provides further evidence of an amorphous phase. To obtain better piezoelectric properties, La2O3 was
selected as the donor dopant for the 0.90PZT–0.05PMS–0.05PZN + 1.0 wt% CuO system. Our study demonstrates that La2O3 is very effective in
improving piezoelectric properties, markedly increasing d33 and kp without decreasing Qm. Finally, 0.5 wt% La2O3 added 0.90PZT–0.05PMS–
0.05PZN + 1.0 wt% CuO ceramics show excellent electrical properties. d33 = 355 pC/N, Qm = 936, kp = 58.4%, tanδ = 0.32%, and
33/"0 = 1590, which are quite suitable for multilayer piezoelectric ceramic actuators.
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