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<p>Yb<sub>2</sub>O<sub>3</sub> doped 0.12Pb (Ni<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub>–0.43PbZrO<sub>3</sub>–0.45PbTiO<sub>3</sub> piezoelectric ceramics are prepared by the conventional solid state sintering method. The effects of Yb<sub>2</sub>O<sub>3</sub> on the phase structure, microstructure, and electrical properties of PNT-PZ-PT ceramics are systematically investigated. As Yb<sub>2</sub>O<sub>3</sub> content increase, the volume percentage of the Tetragonal phase increases accompanied by a decrease in the Rhombohedral phase. When the doped content is 0.1&#xa0;mol%, it exhibits the excellent performance of piezoelectric <i>d</i><sub>33</sub> ~ 416 pC/N, planar electromechanical coupling coefficient <i>k</i><sub>p</sub> ~ 0.618, mechanical quality factor <i>Q</i><sub>m</sub> ~ 286, and the Curie temperature <i>T</i><sub>m</sub> ~ 310&#xa0;°C, respectively. The optimal piezoelectric properties due to the higher content of the <i>R</i> phase, which facilitates easier domain switching and rotation. The broad usage temperature range of these ceramics, spanning from room temperature to near the Curie temperature, makes them suitable for various high-temperature applications.</p>

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High piezoelectricity and broad usage temperature range in rare earth Yb2O3 doped PNT-PZ-PT ceramics

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Meng Liu,
  • Junjun Wang,
  • Yufang Jiao,
  • Bingsen Wang,
  • Yan Mu,
  • Che Sun,
  • Fengmin Wu,
  • Danqing Liu

摘要

Yb2O3 doped 0.12Pb (Ni1/3Ta2/3)O3–0.43PbZrO3–0.45PbTiO3 piezoelectric ceramics are prepared by the conventional solid state sintering method. The effects of Yb2O3 on the phase structure, microstructure, and electrical properties of PNT-PZ-PT ceramics are systematically investigated. As Yb2O3 content increase, the volume percentage of the Tetragonal phase increases accompanied by a decrease in the Rhombohedral phase. When the doped content is 0.1 mol%, it exhibits the excellent performance of piezoelectric d33 ~ 416 pC/N, planar electromechanical coupling coefficient kp ~ 0.618, mechanical quality factor Qm ~ 286, and the Curie temperature Tm ~ 310 °C, respectively. The optimal piezoelectric properties due to the higher content of the R phase, which facilitates easier domain switching and rotation. The broad usage temperature range of these ceramics, spanning from room temperature to near the Curie temperature, makes them suitable for various high-temperature applications.