Relaxor behavior of piezoelectric Pb(Yb1/2Nb1/2) O3-PbTiO3 ceramics sintered at low temperature

Jong Bong Lim, Shujun Zhang, Thomas R. Shrout

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8 Scopus citations

Abstract

A (100-x)Pb(Yb1/2Nb1/2)O3-xPbTiO 3 [PYNPTx] solid solution system with 49.0≤×≤51.0 was prepared using a conventional ceramics process and sintered at low temperature. When excess PbO was added into the PYNPTx system, all samples were sintered at temperatures as low as 800°C with good dielectric and piezoelectric properties. It is suggested that a liquid phase with excess PbO was formed during the sintering and improved the densification of PYN-PTx ceramics at low temperatures. For the PYN-PTx binary system, it was found that the temperature dependence of the relative permittivity follows a Curie-Weiss Law above the deviation temperature (TD) at high temperatures. Good piezoelectric properties of d33= 510 pC/N, εr=2800 at RT, kp=0.57, and kt=0.42 with Tc= 373°C were obtained for PYN-PT49.5 ceramics sintered at 800°C for 8 h.

Original languageEnglish (US)
Pages (from-to)68-73
Number of pages6
JournalJournal of Electroceramics
Volume26
Issue number1-4
DOIs
StatePublished - Jun 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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