Scholarlink

Abstract <p>The aim of this research is to study the effects of thermal annealing treatment on phase, microstructure, piezoelectric, ferroelectric, electric field-induced strain, dielectric, and energy harvesting properties of the eco-friendly 0.80(Bi<sub>0.49</sub>Sr<sub>0.01</sub>Na<sub>0.40</sub>K<sub>0.10</sub>TiO<sub>3</sub>)-0.20BaTiO<sub>3</sub> or 0.80BSrNKT-0.20BT piezoelectric ceramics. All ceramics were annealed with different annealing temperatures from 900 to 1000&#xa0;°C for 12&#xa0;h. With increasing annealing temperature, crystal structure was changed from a mixed rhombohedral–tetragonal to be more tetragonal-rich phase and gave rise to densification and electrical properties’ enhancement. The ceramic annealed at optimum temperature of 950&#xa0;°C for 12&#xa0;h exhibited excellence electrical performances, <i>i.e.,</i> dielectric (<i>ε</i><sub><i>r</i></sub> = 988, <i>tan δ</i> = 0.0504, <i>T</i><sub><i>F−R</i></sub> = 171&#xa0;°C<i>, T</i><sub><i>m</i></sub> = 311&#xa0;°C, <i>ε</i><sub>max</sub> = 4914, <i>γ</i> = 1.69), ferroelectric (<i>P</i><sub><i>r</i></sub> = 31.94&#xa0;μC/cm<sup>2</sup>, <i>E</i><sub><i>c</i></sub> = 32.58&#xa0;kV/cm, <i>R</i><sub><i>sq</i></sub> = 1.98), electric field-induced strain (<i>S</i><sub>max</sub> = 0.37%, <i>d</i><sup><i>*</i></sup><sub><i>33</i></sub> = 617&#xa0;pm/V, <i>Q</i><sub><i>33</i></sub> = 0.0397&#xa0;m<sup>4</sup>/C<sup>2</sup>), and piezoelectric (<i>d</i><sub><i>33</i></sub> = 224 pC/N, <i>k</i><sub><i>p</i></sub> = 0.491, <i>g</i><sub><i>33</i></sub> = 25.61 × 10<sup>–3</sup>&#xa0;Vm/N), Furthermore, the off-resonance figure of merit (FoM) for energy harvesting enhanced by 30% (5.74&#xa0;pm<sup>2</sup>/N) after employing this technique. This ceramic also showed high power density (<i>P</i>) of 1.18 × 10<sup>5</sup>&#xa0;W/cm<sup>3</sup> (@<i>T</i> = 175 °C, <i>E</i> = 60&#xa0;kV/cm). The above results indicated that we can efficiently enhanced electrostrain, energy harvesting, and electrical performances via designed a suitable thermal annealing treatment, and suggesting that these ceramics can be considered candidate for actual actuator and energy harvesting applications.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Optimizing energy harvesting and electrostrain performances of eco-friendly (Bi0.49Sr0.01Na0.40K0.10TiO3)-based ceramics via designed thermal treatment

  • 期刊论文

  • 发表日期：

    2025年12月19日

查看全文
  • Parkpoom Jarupoom,
  • Pimpilai Wannasut,
  • Orawan Khamman,
  • Anucha Watcharapasorn,
  • Pharatree Jaita

摘要

Abstract

The aim of this research is to study the effects of thermal annealing treatment on phase, microstructure, piezoelectric, ferroelectric, electric field-induced strain, dielectric, and energy harvesting properties of the eco-friendly 0.80(Bi0.49Sr0.01Na0.40K0.10TiO3)-0.20BaTiO3 or 0.80BSrNKT-0.20BT piezoelectric ceramics. All ceramics were annealed with different annealing temperatures from 900 to 1000 °C for 12 h. With increasing annealing temperature, crystal structure was changed from a mixed rhombohedral–tetragonal to be more tetragonal-rich phase and gave rise to densification and electrical properties’ enhancement. The ceramic annealed at optimum temperature of 950 °C for 12 h exhibited excellence electrical performances, i.e., dielectric (εr = 988, tan δ = 0.0504, TF−R = 171 °C, Tm = 311 °C, εmax = 4914, γ = 1.69), ferroelectric (Pr = 31.94 μC/cm2, Ec = 32.58 kV/cm, Rsq = 1.98), electric field-induced strain (Smax = 0.37%, d*33 = 617 pm/V, Q33 = 0.0397 m4/C2), and piezoelectric (d33 = 224 pC/N, kp = 0.491, g33 = 25.61 × 10–3 Vm/N), Furthermore, the off-resonance figure of merit (FoM) for energy harvesting enhanced by 30% (5.74 pm2/N) after employing this technique. This ceramic also showed high power density (P) of 1.18 × 105 W/cm3 (@T = 175 °C, E = 60 kV/cm). The above results indicated that we can efficiently enhanced electrostrain, energy harvesting, and electrical performances via designed a suitable thermal annealing treatment, and suggesting that these ceramics can be considered candidate for actual actuator and energy harvesting applications.

Graphical abstract