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<p>Outstanding electric performance can be achieved in the textured ceramics. Therefore, the Ba<sub>0.85</sub>Ca<sub>0.15</sub>Zr<sub>0.09</sub>Ti<sub>0.91</sub>O<sub>3</sub> (BCZT) lead-free piezoceramics with high texture degree (<i>f</i>) in &lt; 001 &gt; direction were successfully prepared using template grain growth method. On account of the perfect sheet BaTiO<sub>3</sub> (BT) templates, a texture degree as high as 97.9% for BCZT-3.0 wt% BT ceramics was obtained. The ceramics system exhibited excellent comprehensive electrical properties (<i>d</i><sub>33</sub> ~ 575 pC N<sup>−1</sup>, <i>k</i><sub>p</sub> ~ 0.61, <i>T</i><sub>C</sub> ~ 89 °C <i>ε</i><sub>r</sub> (20 °C) ~ 3002, tan<i>δ</i> ~ 4.18%, <i>P</i><sub>r</sub> ~ 10.91 μC cm<sup>−2</sup>, <i>E</i><sub>C</sub> ~ 2.20&#xa0;kV&#xa0;cm<sup>−1</sup>). The superior performance originated from the coexistence of rhombohedral-orthorhombic-tetragonal phases (R-O-T), as well as high textured degree. The multiphase coexistence was attributed to the composition design. This work provides a theoretical basis for designing lead-free piezoceramics with excellent properties in the future.</p> Graphical abstract <p>Excellent comprehensive electrical properties in the textured BCZT ceramics with coexistence of rhombohedral-orthorhombic-tetragonal phases (R-O-T) was obtained by composition design.</p>

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Superior comprehensive electrical properties in the < 001 > textured Ba0.85Ca0.15Zr0.09Ti0.91O3 lead-free piezoelectric ceramics

  • 期刊论文

  • 发表日期：

    2025年7月16日

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  • An Xue,
  • Sheng xian Luo,
  • Fang fang Zeng,
  • Zhi yong Yang,
  • Yang Li,
  • Zhi yao Chu,
  • Xiao ning Tang,
  • Qi bin Liu,
  • Yun peng Qu

摘要

Outstanding electric performance can be achieved in the textured ceramics. Therefore, the Ba0.85Ca0.15Zr0.09Ti0.91O3 (BCZT) lead-free piezoceramics with high texture degree (f) in < 001 > direction were successfully prepared using template grain growth method. On account of the perfect sheet BaTiO3 (BT) templates, a texture degree as high as 97.9% for BCZT-3.0 wt% BT ceramics was obtained. The ceramics system exhibited excellent comprehensive electrical properties (d33 ~ 575 pC N−1, kp ~ 0.61, TC ~ 89 °C εr (20 °C) ~ 3002, tanδ ~ 4.18%, Pr ~ 10.91 μC cm−2, EC ~ 2.20 kV cm−1). The superior performance originated from the coexistence of rhombohedral-orthorhombic-tetragonal phases (R-O-T), as well as high textured degree. The multiphase coexistence was attributed to the composition design. This work provides a theoretical basis for designing lead-free piezoceramics with excellent properties in the future.

Graphical abstract

Excellent comprehensive electrical properties in the textured BCZT ceramics with coexistence of rhombohedral-orthorhombic-tetragonal phases (R-O-T) was obtained by composition design.