Dielectric and piezoelectric properties in the BiScO3-PbTiO 3-PbO·SnO2 ternary system

Tae Ho Song, Richard E. Eitel, Thomas R. Shrout, Clive A. Randall

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

The effect of Sn substitution on the dielectric and piezoelectric properties of BiScO3-PbTiO3 was investigated in the ternary system, (1 - x){(1 - y)BiScO3-yPbO·SnO 2}-xPbTiO3 (x = 0.43-0.63, y = 0.25-0.75). The ferroelectric phase transition temperature near morphotropic phase boundary (MPB) decreased with increasing Sn content from 450°C (x, y = 0.64, 0) down to ∼250°C for the composition with x, y = 0.46, 0.75. Piezoelectric activity (d33 = 460-465 and kp = 0.54) in Sn-substituted MPBs remained at similar levels to the pure 0.46BiScO3-0.64PbTiO 3 MPB, with Sn content of up to y = 0.5. However, further Sn-additions lead to decreased electromechanical performance and the formation of secondary phases such as SnO2. Broad temperature dependence of the permittivity near the ferroelectric phase transition was assessed by a diffuseness parameter δ, which generally decreased with firing temperature in the range of 1050-1250°C. The temperature of the permittivity maximum (Tmax) increased with measuring frequency, a characteristic consistent with relaxor ferroelectric materials.

Original languageEnglish (US)
Pages (from-to)5392-5397
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume43
Issue number8 A
DOIs
StatePublished - Aug 1 2004

All Science Journal Classification (ASJC) codes

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

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