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<p>0.97[(Pb<sub>0.94</sub>Sr<sub>0.05</sub>La<sub>0.01</sub>)(Zr<sub>0.51</sub>Ti<sub>0.49</sub>)O<sub>3</sub>]–(0.03–<i>x</i>)[Bi(Mn<sub>1/2</sub>Ti<sub>1/2</sub>)O<sub>3</sub>]–<i>x</i>[Pb(Mn<sub>1/3</sub>Sb<sub>2/3</sub>)O<sub>3</sub>] (PSLZT–BMT–PMS, <i>x</i> = 0.0–0.008) ceramics doped with <i>y</i> wt.% Fe<sub>2</sub>O<sub>3</sub> (<i>y</i> = 0.0–0.6) were prepared using conventional mixed oxide method. The focus was on studying the simultaneous influence of Pb(Mn<sub>1/3</sub>Sb<sub>2/3</sub>)O<sub>3</sub> composition and Fe<sub>2</sub>O<sub>3</sub> doping on the structural phase modification process to obtain an ultra-high-<i>Q</i><sub>m</sub> piezoelectric ceramic. The experimental results revealed that the PSLZT–BMT–PMS ceramics exhibited superior physical properties at the optimum values of <i>x</i> = 0.006 and <i>y</i> = 0.3, with <i>Q</i><sub>m</sub> = 2009, tan<i>δ</i> = 0.003, <i>ε</i><sub>r</sub> = 1143,&#xa0;<i>d</i><sub>33</sub> = 425 pC/N, <i>k</i><sub>p</sub> = 0.60, <i>P</i><sub><i>r</i></sub> = 15.3 µC/cm<sup>2</sup>, and <i>d</i><sub>33</sub><sup>*</sup> = 430&#xa0;pm/V. The superior physical properties were attributed to the phase structure transformation of the ceramics to form the morphological phase boundary, optimized microstructure features, and reduced dielectric loss. Besides, the influence of Fe<sub>2</sub>O<sub>3</sub> doping on the dielectric relaxation behavior and the phase transition temperature of PSLZT–BMT–PMS ceramics was investigated and discussed. The results indicated that the PSLZT–BMT–PMS ceramics doped with 0.3 wt.% Fe<sub>2</sub>O<sub>3</sub> had the following high-temperature parameters related to phase transitions: <i>T</i><sub>f</sub> = 286&#xa0;°C,<i> T</i><sub>m</sub> = 320&#xa0;°C, <i>T</i><sub>CW</sub> = 323&#xa0;°C, <i>T</i><sub>B</sub> = 381&#xa0;°C, and <i>ΔT</i><sub><i>m</i></sub> = 61&#xa0;°C, which exhibited the potential for high-power piezoelectric applications.</p>

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Improved piezoelectric properties of the Fe2O3-modified 0.97PSLZT-(0.03-x)BMT-xPMS for high-power piezoelectric applications

  • 期刊论文

  • 发表日期：

    2025年2月9日

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  • Le Dai Vuong,
  • Nguyen Van Thinh,
  • Do Viet On,
  • Vo Thanh Tung

摘要

0.97[(Pb0.94Sr0.05La0.01)(Zr0.51Ti0.49)O3]–(0.03–x)[Bi(Mn1/2Ti1/2)O3]–x[Pb(Mn1/3Sb2/3)O3] (PSLZT–BMT–PMS, x = 0.0–0.008) ceramics doped with y wt.% Fe2O3 (y = 0.0–0.6) were prepared using conventional mixed oxide method. The focus was on studying the simultaneous influence of Pb(Mn1/3Sb2/3)O3 composition and Fe2O3 doping on the structural phase modification process to obtain an ultra-high-Qm piezoelectric ceramic. The experimental results revealed that the PSLZT–BMT–PMS ceramics exhibited superior physical properties at the optimum values of x = 0.006 and y = 0.3, with Qm = 2009, tanδ = 0.003, εr = 1143, d33 = 425 pC/N, kp = 0.60, Pr = 15.3 µC/cm2, and d33* = 430 pm/V. The superior physical properties were attributed to the phase structure transformation of the ceramics to form the morphological phase boundary, optimized microstructure features, and reduced dielectric loss. Besides, the influence of Fe2O3 doping on the dielectric relaxation behavior and the phase transition temperature of PSLZT–BMT–PMS ceramics was investigated and discussed. The results indicated that the PSLZT–BMT–PMS ceramics doped with 0.3 wt.% Fe2O3 had the following high-temperature parameters related to phase transitions: Tf = 286 °C, Tm = 320 °C, TCW = 323 °C, TB = 381 °C, and ΔTm = 61 °C, which exhibited the potential for high-power piezoelectric applications.