Low-temperature sintering and electrical properties of (1?x)Pb(Zr0.5Ti0.5)O3-xPb(Cu0.33Nb0.67)O3 ceramics |
| |
Authors: | Hyeung Gyu Lee Ji Hyun Choi Eung Soo Kim |
| |
Affiliation: | (1) Electronic Materials & Packaging Center, KETI, Kyonggi-do, 463-816, Korea;(2) Department of Materials Engineering, Kyonggi University, Suwon, 442-760, Korea |
| |
Abstract: | Electrical properties and sintering behaviors of (1 − x)Pb(Zr0.5Ti0.5)O3-xPb(Cu0.33Nb0.67)O3 ((1 − x)PZT-xPCN, 0.04 ≤ x ≤ 0.32) ceramics were investigated as a function of PCN content and sintering temperature. For the specimens
sintered at 1050∘C for 2 h, a single phase of perovskite structure was obtained up to x = 0.16, and the pyrochlore phase, Pb2Nb2O7 was detected for further substitution. The dielectric constant (ε r), electromechanical coupling factor (Kp) and the piezoelectric coefficient (d
33) increased up to x = 0.08 and then decreased. These results were due to the coexistence of tetragonal and rhombohedral phases in the composition
of x = 0.08. With an increasing of PCN content, Curie temperature (Tc) decreased and the dielectric loss (tanδ) increased. Typically, εr of 1636, Kp of 64% and d33 of 473pC/N were obtained for the 0.92PZT-0.08PCN ceramics sintered at 950∘C for 2 h. |
| |
Keywords: | Pb(Zr0 5Ti0 5)O3-Pb(Cu0 33Nb0 67)O3 Low-temperature sintering Dielectric constant Curie temperature Piezoelectric coefficient |
本文献已被 SpringerLink 等数据库收录! |
|