J. Mater. Sci. Technol. ›› 2023, Vol. 161: 101-110.DOI: 10.1016/j.jmst.2023.03.025

• Research Article • Previous Articles     Next Articles

Effect of Sb-induced oxygen octahedral distortion on piezoelectric performance and thermal stability of Pb(In,Nb)O3-Pb(Hf,Ti)O3 ceramics

Huanli Shia,b,1, Mo Zhaoc,d,1, Dongyan Zhanga,*, Zhimin Lia, Maolin Zhanga, Jingya Wange, Li Jinc,*, Yangxi Yana,*   

  1. aSchool of Advanced Materials and Nanotechnology, Xidian University, Xi’an 710071, China;
    bNational Ceramic Industry Design Institute of China, Quanzhou 362500, China;
    cElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
    dState Key Laboratory of Intense Pulsed Radiation Simulation and Effect (Northwest Institute of Nuclear Technology), Xi’an 710024, China;
    eShaanxi Applied Physics and Chemistry Research Institute, Xi’an 710061, China
  • Received:2023-01-11 Revised:2023-03-02 Accepted:2023-03-02 Published:2023-10-20 Online:2023-04-23
  • Contact: *E-mail addresses: zhangdongyan@xidian.edu.cn (D. Zhang), ljin@mail.xjtu.edu.cn (L. Jin), yxyan@xidian.edu.cn (Y. Yan)
  • About author:1These authors contributed equally to this work.

Abstract: The combination of excellent thermal stability and outstanding electrical performance is of great significance for piezoelectric ceramics. Herein, we have prepared 0.11Pb(In0.5Nb0.5)O3-0.89Pb(Hf0.47Ti0.53)O3-Sb2O5 (PIN-PHT-xSb) ceramics by solid-phase method and investigated the effect of oxygen octahedral lattice distortion on microstructure and macroscopic electrical properties. The distortion index of oxygen octahedra is studied by Rietveld refinement, showing that optimal octahedral distortion can soften B-O repulsion, disrupt long-range ordered ferroelectric domains, and enhance local heterogeneities, significantly increasing piezoelectric properties. Moreover, outstanding thermal stability and ultrahigh piezoelectric response of PIN-PHT-1.2Sb ceramics are realized under the synergistic influence of octahedral distortion, excellent density, and large grain size. Compared with PIN-PHT ceramics, PIN-PHT-1.2Sb ceramics exhibit ultrahigh piezoelectric responses (d33 = 706 pC/N, kp = 0.68, εr = 3244), a high Curie temperature (TC) of 300 °C, excellent thermal stability, and anti-fatigue properties.

Key words: Oxygen octahedron, Piezoelectric response, Thermal stability