Lead zirconate titanate ceramics with aligned crystallite grains. 2023

Jinglei Li, and Wanbo Qu, and John Daniels, and Haijun Wu, and Linjing Liu, and Jie Wu, and Mingwen Wang, and Stefano Checchia, and Shuai Yang, and Haobin Lei, and Rui Lv, and Yang Zhang, and Danyang Wang, and Xuexin Li, and Xiangdong Ding, and Jun Sun, and Zhuo Xu, and Yunfei Chang, and Shujun Zhang, and Fei Li
Electronic Materials Research Laboratory (Key Lab of Education Ministry), State Key Laboratory for Mechanical Behavior of Materials and School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

The piezoelectric properties of lead zirconate titanate [Pb(Zr,Ti)O3 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)O3 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°C, piezoelectric coefficients d33 of 760 picocoulombs per newton and g33 of 100 millivolt meters per newton, and electromechanical couplings k33 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.

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