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<p><i>x</i>Bi(Ni<sub>0.5</sub>Ti<sub>0.5</sub>)O<sub>3</sub>–(1-<i>x</i>)Pb(Zr<sub>0.52</sub>Ti<sub>0.48</sub>)O<sub>3</sub> (<i>x</i>BNPZT; <i>x</i> = 0.22, 0.24, 0.26, and 0.28) ceramics were synthesized via the conventional solid-state reaction route. Rietveld refinement analysis confirms the formation of a pure perovskite structure with a mixture of rhombohedral (R3c) and tetragonal (P4mm) phases. The 0.24BNPZT ceramics exhibited an enhanced dielectric constant (<i>ε</i><sub><i>r</i></sub><i> ⁓ 5393</i>) and the temperature at maximum dielectric constant (<i>T</i><sub><i>m</i></sub>) of <i>247&#xa0;°C</i>. The <i>x</i>BNPZT (<i>x</i> = 0.24, 0.26, and 0.28) ceramics exhibited a dielectric loss of less than 1. A high remnant polarization (<i>P</i><sub><i>r</i></sub>~<i>34.93 µC/cm</i><sup><i>2</i></sup>) and coercive field (<i>E</i><sub><i>C</i></sub> ~ <i>11.47&#xa0;kV/cm</i>) were obtained in 0.22BNPZT ceramics. A maximum bipolar strain (Sₘₐₓ≈0.16%) was achieved in <i>x</i>BNPZT ceramics (<i>x</i> = 0.24 and 0.26), while the highest piezoelectric charge coefficient (d₃₃≈454 pC/N) was observed in 0.22BNPZT ceramics. These results indicate that <i>0.22</i>BNPZT ceramics can be designed for an enhanced d<sub>33</sub> response for piezoelectric transducer applications.</p>

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Dielectric, ferroelectric, piezoelectric, and strain properties of xBi(Ni0.5Ti0.5)O3–(1-x)Pb(Zr0.52Ti0.48)O3 ceramics

  • 期刊论文

  • 发表日期：

    2025年11月27日

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  • S. Guru Bharath,
  • G. Anandha Babu

摘要

xBi(Ni0.5Ti0.5)O3–(1-x)Pb(Zr0.52Ti0.48)O3 (xBNPZT; x = 0.22, 0.24, 0.26, and 0.28) ceramics were synthesized via the conventional solid-state reaction route. Rietveld refinement analysis confirms the formation of a pure perovskite structure with a mixture of rhombohedral (R3c) and tetragonal (P4mm) phases. The 0.24BNPZT ceramics exhibited an enhanced dielectric constant (εr ⁓ 5393) and the temperature at maximum dielectric constant (Tm) of 247 °C. The xBNPZT (x = 0.24, 0.26, and 0.28) ceramics exhibited a dielectric loss of less than 1. A high remnant polarization (Pr~34.93 µC/cm2) and coercive field (EC ~ 11.47 kV/cm) were obtained in 0.22BNPZT ceramics. A maximum bipolar strain (Sₘₐₓ≈0.16%) was achieved in xBNPZT ceramics (x = 0.24 and 0.26), while the highest piezoelectric charge coefficient (d₃₃≈454 pC/N) was observed in 0.22BNPZT ceramics. These results indicate that 0.22BNPZT ceramics can be designed for an enhanced d33 response for piezoelectric transducer applications.