Lead zirconate titanate ceramics with aligned crystallite grains

• 成果类型: Article
• 署名作者: Li, Jinglei; Qu, Wanbo; Daniels, John; Wu, Haijun; Liu, Linjing; Wu, Jie; Wang, Mingwen; Checchia, Stefano; Yang, Shuai; Lei, Haobin; Lv, Rui; Zhang, Yang; Wang, Danyang; Li, Xuexin; Ding, Xiangdong; Sun, Jun; Xu, Zhuo; Chang, Yunfei; Zhang, Shujun; Li, Fei
• 署名单位: Xi'an Jiaotong University; Xi'an Jiaotong University; Xi'an Jiaotong University; University of New South Wales Sydney; Harbin Institute of Technology; European Synchrotron Radiation Facility (ESRF); Xi'an Jiaotong University; University of Wollongong
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-11709
• DOI: 10.1126/science.adf6161
• 发表日期: 2023-04-07
• 页码: 87-93
• 关键词: piezoelectric ceramics; GROWTH; polarization

摘要

The piezoelectric properties of lead zirconate titanate [Pb(Zr,Ti)O-3 or PZT] ceramics could be enhanced by fabricating textured ceramics that would align the crystal grains along specific orientations. We present a seed-passivated texturing process to fabricate textured PZT ceramics by using newly developed Ba(Zr,Ti)O-3 microplatelet templates. This process not only ensures the template-induced grain growth in titanium-rich PZT layers but also facilitates desired composition through interlayer diffusion of zirconium and titanium. We successfully prepared textured PZT ceramics with outstanding properties, including Curie temperatures of 360 degrees C, piezoelectric coefficients d(33) of 760 picocoulombs per newton and g(33) of 100 millivolt meters per newton, and electromechanical couplings k(33) of 0.85. This study addresses the challenge of fabricating textured rhombohedral PZT ceramics by suppressing the otherwise severe chemical reaction between PZT powder and titanate templates.