High temperature dielectric, ferroelectric and piezoelectric properties of Mn-modified BiFeO3-BaTiO3 lead-free ceramics

These results showed that the BF-BT-x %Mn ceramics were promising candidate for high temperature piezoelectric applications

Qiang Li; Jianxin Wei; Jinrong Cheng; Jianguo Chen

2016

Key concepts

Scholarcy highlights

  • Lead-free and high-temperature 0.71BiFeO3-0.29BaTiO3 ceramics with Mn modification were fabricated by conventional solid-state reaction method, and the high temperature dielectric, ferroelectric and piezoelectric properties were investigated
  • Mn modification improved the electrical properties of BF-BT solid solutions at both room and high temperature
  • The εr, tanδ, and kp of BF-BT-1.2 %Mn ceramics were stable with the increase of temperature until 500 °C
  • The high field strain coefficient d*33 reached as large as 525 pm V−1 at 200 °C. These results showed that the BF-BT-x %Mn ceramics were promising candidate for high temperature piezoelectric applications
  • Q., Wei, J., Cheng, J. et al High temperature dielectric, ferroelectric and piezoelectric properties of Mn-modified BiFeO3-BaTiO3 lead-free ceramics

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