Piezoelectric properties of Ca-modified Pb0.6Bi0.4(Ti0.75Zn0.15Fe0.10)O3 ceramics |
| |
| Authors: | Fei-fei An Fei Cao Jian Yu |
| |
| Affiliation: | 1. Functional Materials Research Laboratory, Tongji University, Shanghai 200092, China;2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China |
| |
| Abstract: | Perovskite-structured Pb0.6Bi0.4(Ti0.75Zn0.15Fe0.1)O3 ceramics was reported with high Curie temperature TC of 705 °C and tetragonality of c/a = 1.10, promising for high temperature applications with large piezoelectric anisotropy. In this paper, it was experimentally demonstrated to ease poling processing and enhance piezoelectricity through substituting lead with calcium of Pb0.6?xCaxBi0.4(Ti0.75Zn0.15Fe0.1)O3. For the x = 0.18 sample, electromechanical coupling factor ratio of kt/kp → ∞, dielectric constant of 380, piezoelectric coefficient d33 of 80 pC/N, mechanical quality factor Qm of 50 and Curie point TC of 237 °C were obtained, which exhibits better piezoelectric performance than the (Pb0.76Ca0.24)(Ti0.96(Co0.5W0.5)0.04)O3. The enhanced piezoelectric response was analyzed with relation to the reduction of tetragonality and Curie temperature. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
