Pyroelectric properties and AC impedance study of bismuth ferrite (BiFeO3) ceramics

Yingbang Yao, Tao Tao, Bo Liang, C. L. Mak, S. G. Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

The pyroelectric properties of bismuth ferrite (BiFeO3) ceramics has been investigated over temperatures between 25 °C and 180 °C. AC impedance spectra have been measured over a wide frequency range from 2 mHz to 100 kHz. The results have been analyzed with respect to permittivity, conductivity, impedance and electric modulus. Based on an equivalent circuit model the bulk resistance Rbulk has been obtained from extrapolation of their Cole-Cole plots. It has been found that Rbulk decreases rapidly with increasing temperature. Origins of the observed results were discussed.

Original languageEnglish
Pages (from-to)1308-1313
Number of pages6
JournalCeramics International
Volume45
Issue number1
DOIs
Publication statusPublished - Jan 2019

Keywords

  • AC impedance
  • Bismuth ferrite
  • Dielectric relaxation
  • Oxygen vacancy
  • Pyroelectricity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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