Electromechanical properties and dielectric behavior of (Bi1/2Na1/2)(1-1.5x)BixTiO3lead-free piezoelectric ceramics

X. X. Wang, Kin Wing Kwok, X. G. Tang, H. L.W. Chan, C. L. Choy

Research output: Journal article publicationJournal articleAcademic researchpeer-review

80 Citations (Scopus)

Abstract

Bismuth doped bismuth sodium titanate ceramics [(Bi1/2Na1/2)(1-1.5x)BixTiO3, x = 0 to 0.06] were prepared, and the resulting effects on the microstructure and dielectric properties were examined. All of the Bi-doped ceramics exhibited a single phase of perovskite structure with rhombohedral symmetry. The poling leakage current was significantly reduced by the doping of Bi, facilitating the poling process of the ceramics. The doping with Bi enhances the piezoelectric properties and increases the dielectric constant and the dielectric loss of the ceramics. At 2 mol% Bi-doping level, the ceramics exhibit a large remanent polarization of 47 μC/cm2and a relatively low coercive field of 71 kV/cm, while their d33and kpreach a maximum value of 95 pC/N and 21%, respectively.
Original languageEnglish
Pages (from-to)319-323
Number of pages5
JournalSolid State Communications
Volume129
Issue number5
DOIs
Publication statusPublished - 1 Feb 2004

Keywords

  • A. Ferroelectrics
  • D. Dielectric response
  • D. Piezoelectricity

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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