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<p>The structural, ferroelectric, and piezoelectric properties of BaTiO<sub>3</sub>-modified 0.36BiScO<sub>3</sub>-0.64PbTiO<sub>3</sub>, (BS-PT-<i>x</i>BT, <i>x</i> = 0.1, 0.2, 0.3 and 0.4) ceramics were investigated. These ternary ceramics were synthesized using the conventional solid-state reaction method. X-ray diffraction analysis confirmed the formation of a pure perovskite phase in all compositions. At <i>x</i> = 0.1, a morphotropic phase boundary (MPB) region was observed, characterized by the coexistence of rhombohedral and tetragonal phases. The temperature-dependent dielectric measurements revealed a diffuse phase transition behavior, attributed to chemical heterogeneity introduced by BaTiO<sub>3</sub> doping. Among all compositions, the <i>x</i> = 0.1 sample exhibited optimal electrical properties, with a Curie temperature (<i>T</i><sub>C</sub>) of 318 ℃, an electromechanical coupling factor (<i>k</i><sub>P</sub>) of 42.2%, a piezoelectric coefficient (<i>d</i><sub>33</sub>) of 340 pC/N, and a remanent polarization (<i>P</i><sub>r</sub>) of 39.64 µC/cm<sup>2</sup>. These enhanced properties suggest the BS-PT-0.1BT ceramics are promising candidates for high-temperature piezoelectric device applications.</p>

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Influence of BaTiO3 on the piezoelectric and ferroelectric properties of 0.36BiScO3-0.64PbTiO3 ceramics

  • 期刊论文

  • 发表日期：

    2025年6月19日

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  • Subramanian Sasikumar,
  • Jeganathan Mangaiyarkkarasi,
  • Rajabathar Jothi Ramalingam,
  • Dhanushkodi Sivaganesh,
  • Subramanian Saravanakumar

摘要

The structural, ferroelectric, and piezoelectric properties of BaTiO3-modified 0.36BiScO3-0.64PbTiO3, (BS-PT-xBT, x = 0.1, 0.2, 0.3 and 0.4) ceramics were investigated. These ternary ceramics were synthesized using the conventional solid-state reaction method. X-ray diffraction analysis confirmed the formation of a pure perovskite phase in all compositions. At x = 0.1, a morphotropic phase boundary (MPB) region was observed, characterized by the coexistence of rhombohedral and tetragonal phases. The temperature-dependent dielectric measurements revealed a diffuse phase transition behavior, attributed to chemical heterogeneity introduced by BaTiO3 doping. Among all compositions, the x = 0.1 sample exhibited optimal electrical properties, with a Curie temperature (TC) of 318 ℃, an electromechanical coupling factor (kP) of 42.2%, a piezoelectric coefficient (d33) of 340 pC/N, and a remanent polarization (Pr) of 39.64 µC/cm2. These enhanced properties suggest the BS-PT-0.1BT ceramics are promising candidates for high-temperature piezoelectric device applications.