Electrical properties of 0.94Bi0.5Na0.5TiO3–0.06Ba(Zr0.055Ti0.945)O3 lead-free ceramics with high thermal stability

Jun Jun Wang, Fei Fei Guo, Bin Yang, Shan Tao Zhang, Li Mei Zheng, Feng Min Wu, Wen Wu Cao

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Here we report the 0.94(Bi0.5Na0.5)TiO3–0.06Ba(Zr0.055Ti0.945)O3 (0.94BNT–0.06BZT) lead-free ceramics was synthesized by two-step solid state reaction route. The structural, dielectric, ferroelectric, piezoelectric and electromechanical properties of the ceramics were studied, and showed excellent electric properties (Ps = 39.9 μC/cm2, Pr = 33.7 μC/cm2, Ec = 2.79 kV/mm, S = 0.20%, d33 = 174 pC/N, kp = 0.33). The depolarization temperature (Td) of the ceramics is about 65 °C, which is determined from the first hump of relative dielectric constant. The electromechanical factor kp disappears at 65 °C, is consistent with the depolarization temperature (Td) and the ferroelectric-antiferroelectric phase transition temperature (Tfe−afe) determined from the temperature-dependent P–E and bipolar S–E curves. These results indicate the 0.94BNT–0.06BZT ceramics has a good thermal stability in range of − 60–60 °C, and meets the actual demand.

Original languageEnglish (US)
Pages (from-to)2357-2362
Number of pages6
JournalJournal of Materials Science: Materials in Electronics
Volume29
Issue number3
DOIs
StatePublished - Feb 1 2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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