Electromechanical properties of relaxor ferroelectric lead magnesium niobate-lead titanate ceramics

J. Zhao, Q. M. Zhang, N. Kim, T. Shrout

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Abstract

In this paper, the results of a recent investigation of the dependence of the induced piezoelectric activity on temperature, electric bias field, and frequency and the electrostrictive response in the relaxor ferroelectric lead magnesium niobate-lead titanate ceramics ((1-x)(Pb(Mg1/3Nb2/3)O3)- x(PbTiO3)) at compositions below 30% PT are presented. It was observed that the electrostrictive strain at temperatures near the dielectric constant maximum Tmax increases monotonically with increased PT content. For PMN:PT at compositions near 30% PT, the electrostrictive strain under a 10 kV/cm electric field can reach about 0.15% with very little hysteresis. An exceptionally large piezoelectric response with an effective piezoelectric d33 coefficient in the electric field induced state of over 1,800 pC/N could be achieved for selected PMN:PT compositions and electric bias fields.

Original languageEnglish (US)
Pages (from-to)5658-5663
Number of pages6
JournalJapanese Journal of Applied Physics
Volume34
Issue number10
DOIs
StatePublished - Oct 1995

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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