J. Mater. Sci. Technol. ›› 2024, Vol. 175: 258-265.DOI: 10.1016/j.jmst.2023.08.017

• Research article • Previous Articles    

Achieving ultrahigh electromechanical properties with high TC in PNN-PZT textured ceramics

Q. Wanga, L. Biana,*, K. Lib,*, Y.C. Liua, Y.L. Yangc, B. Yanga, W.W. Caoa,*   

  1. aSchool of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150080, China;
    bGuangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University, Huizhou 516001, China;
    cConversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China
  • Received:2023-05-20 Revised:2023-07-19 Accepted:2023-08-06 Published:2024-03-10 Online:2023-09-09
  • Contact: *E-mail addresses: bianlang@hit.edu.cn (L. Bian), kailics@hzu.edu.cn (K. Li), wcao@hit.edu.cn (W.W. Cao)

Abstract: <001> textured Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3 (PNN-PZT) ceramics were prepared by templated grain growth (TGG) technique using 0.36PNN-xPZ-(0.64-x)PT (x = 0.23, 0.25 and 0.27) powder matrix. Optimum template content was derived to achieve the best electromechanical properties of textured ceramics. The piezoelectric coefficient d33 = 1165 pC/N, Curie temperature TC = 197 °C, longitudinal mode electromechanical coupling factor k33 = 0.86 and a very large effective piezoelectric strain coefficient d33* = 2041 pm/V were simultaneously achieved at the morphotropic phase boundary (MPB) composition (x = 0.25) with 3 vol.% BaTiO3 (BT) templates. Domain structures of textured ceramics were analyzed in detail to reveal the origin of these high piezoelectric and electromechanical properties.

Key words: Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3 (PNN-PZT) ceramics, MPB composition, Texture engineering, Electromechanical properties, Domain structure