Preparation and characterization of high temperature perovskite ferroelectrics in the solid-solution (1 - x)BiScO3-xPbTiO3

Richard E. Eitel, Clive A. Randall, Thomas R. Shrout, Seung Eek Park

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Abstract

The dielectric and piezoelectric properties of the new perovskite solid solution system (1 - x)BiScO3-xPbTiO3 were investigated. This system is representatively of a new group of high temperature piezoelectrics that includes Bi(Me)O3-PbTiO3 where Me+3 is a relatively large cation, Sc, Y, Yb, In, etc., and combinations thereof. In the (1 - x)BiScO3-xPbTiO3 series, perovskite stability was achieved for x > 50 mol% PbTiO3 being ferroelectric rhombohedral and transforming to ferroelectric tetragonal in the region x = 64 mol% PbTiO3, designated as the morphotropic phase boundary (MPB). Analogous to (1 - x)PbZrO3-xPbTiO3 (PZT), the dielectric and piezoelectric properties were enhanced for compositions near the MPB. Piezoelectric coefficient d33 values reached 450 pC/N, comparable to soft PZT's with a transition temperature of 450°C, more than 100°C higher than commercial PZT. The combination of high TC and excellent piezoelectric activity make (1 - x)BiScO3-xPbTiO3 materials candidates for high temperature, and temperature stable actuators and transducers.

Original languageEnglish (US)
Pages (from-to)2099-2104
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number4
DOIs
StatePublished - Apr 2002

All Science Journal Classification (ASJC) codes

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

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