Modified relaxor-PbTiO3 piezoelectrics for high temperature applications

Jong Bong Lim, Shujun Zhang, Thomas R. Shrout

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this study, Pb1-x(Yb1/2Nb1/2) 0.515Ti0.485O3-x{(2SrO + BaO)/3} [PYNT-SBx] compositions with x = 0.00-0.05 at the rhombohedral side near the morphotropic phase boundary were investigated. The SB substitution for Pb2+ in PYNT was found to increase the tetragonality, but greatly reduce the Curie temperature (T c) and broaden the dielectric permittivity maximum. The temperature dependence of the relative permittivity follows a Curie-Weiss law above the deviation temperature (TD) at high temperatures for the SB-doped PYNT. The optimized properties with a piezoelectric coefficient of 610 pm V-1, maximum dielectric constant (εmax) of 25,000 (at the T c = 315°C and 1 kHz), and a remnant polarization (Pr) of 33 μC cm-2 were obtained in PYNT-SB0.04 ceramics.

Original languageEnglish (US)
Pages (from-to)95-102
Number of pages8
JournalPhase Transitions
Volume84
Issue number2
DOIs
StatePublished - Feb 1 2011

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Materials Science(all)

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