Nonlinearity in Relaxor-Type Ferroelectrics Ceramics

  • Shen CongEmail author
  • Ting-ting Qu
  • Cai-hong Lu
  • Ke Tong
  • Na Li
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 216)


In order to research the nonlinear dielectric and piezoelectric relationships for a relaxor ferroelectrics (e.g., NBT: Na0.5Bi0.5TiO3–xBaTiO3, x = 0.05–0.08), structural and microstructural characterizations were identified by using X-ray diffraction (XRD) and scanning electron microscope (SEM) and P–E hysteresis loops by the ferroelectric hysteresis measurement. The results showed that the P–E loops of NBT ceramics became asymmetric and nonlinear as the field amplitudes increased. At the region of Rayleigh field, the Rayleigh coefficients α of NBT ceramics were evidently lower than conventional ceramics. The results were affected by both frequency and temperature, as the real permittivity and Rayleigh coefficient of NBT ceramics decreased with frequency increase from 0.2 to 20 Hz, and the nonlinearity of NBT ceramics became higher with the temperature increasing.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Shen Cong
    • 1
    Email author
  • Ting-ting Qu
    • 1
  • Cai-hong Lu
    • 1
  • Ke Tong
    • 1
  • Na Li
    • 1
  1. 1.CNPC Tubular Goods Research InstituteXi’anChina

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