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<p>The piezoelectric properties of Pb(Mn<sub>1/3</sub>Sb<sub>2/3</sub>)<sub>0.05</sub>Zr<sub>x</sub>Ti<sub>y</sub>O<sub>3</sub>(PMS-PZT) ceramics were systematically investigated by varying the Zr/Ti ratio and analyzing the role of defect dipoles in the microstructure and electrical properties. Experimental results reveal that adjusting the Zr/Ti ratio affects the grain size, oxygen vacancy concentration, and ferroelectric domain structure of the ceramics, thereby modulating the piezoelectric constant (<i>d</i><sub><i>33</i></sub>), mechanical quality factor (<i>Q</i><sub><i>m</i></sub>), and dielectric loss (<i>tanδ</i>) of the material. Significantly, the PMS-PZT ceramics with Zr/Ti of 47.5/47.5 show excellent temperature stability: the PMS-PZT ceramics retain more than 86% of their maximum piezoelectric constants at temperatures around 270&#xa0;°C, and have loss tangent (<i>tanδ</i>) of less than 0.3% Furthermore, a weakening of the defect dipole pinning effect was observed, leading to a significant increase in the remanent polarization of the material. The variation of the current-electric field profile and Polarization–Electric field hysteresis loop with temperature is illustrated from the point of view of the ferroelectric domain switching.</p>

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The influence of Zr/Ti variation and defect dipoles on the piezoelectric properties of PMS-PZT ceramics

  • 期刊论文

  • 发表日期：

    2025年3月19日

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  • Rong Li,
  • Zhaoyu Zhou,
  • Zhen Shen,
  • Yi Li,
  • Xiang Xia,
  • Xiumei Shi,
  • Huimin Hao

摘要

The piezoelectric properties of Pb(Mn1/3Sb2/3)0.05ZrxTiyO3(PMS-PZT) ceramics were systematically investigated by varying the Zr/Ti ratio and analyzing the role of defect dipoles in the microstructure and electrical properties. Experimental results reveal that adjusting the Zr/Ti ratio affects the grain size, oxygen vacancy concentration, and ferroelectric domain structure of the ceramics, thereby modulating the piezoelectric constant (d33), mechanical quality factor (Qm), and dielectric loss (tanδ) of the material. Significantly, the PMS-PZT ceramics with Zr/Ti of 47.5/47.5 show excellent temperature stability: the PMS-PZT ceramics retain more than 86% of their maximum piezoelectric constants at temperatures around 270 °C, and have loss tangent (tanδ) of less than 0.3% Furthermore, a weakening of the defect dipole pinning effect was observed, leading to a significant increase in the remanent polarization of the material. The variation of the current-electric field profile and Polarization–Electric field hysteresis loop with temperature is illustrated from the point of view of the ferroelectric domain switching.