Preparation and characterization of (K0.5Na0.5)NbO3 ceramics |
| |
| Affiliation: | 1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China;2. Bruker (Beijing) Scientific Technology Co., Ltd, Shanghai, 200233, China;3. Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China;1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China;2. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, PR China;3. Department of Materials Science, Sichuan University, Chengdu, 610064, PR China;1. Key Laboratory for Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an, 710062 Shaanxi, PR China;2. School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062 Shaanxi, PR China |
| |
| Abstract: | In this paper the preparation and characterization of the ceramic material (K0.5Na0.5)NbO3 (KNN) has been studied. Although conventional processing of KNN is often reported to result in sintered bodies lacking sufficient density, samples produced in this work exhibit theoretical density over 95% and yield superior piezoelectric properties than those obtained by the same method and reported previously. The electromechanical coupling coefficient in the thickness direction, kt, is found to reach 45%. Apart from kt, the piezoelectric coefficients in longitudinal and planar directions (d33 of 100pC/N and d31 of 43pC/N), hysteresis loop, pyroelectric coefficient measurements and dielectric properties are presented. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
