Enhanced piezoelectric and pyroelectric effects in single-phase multiferroic Bi 1-xNd xFeO 3 (x=0-0.15) ceramics

G. L. Yuan, Siu Wing Or

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188 Citations (Scopus)

Abstract

Single-phase multiferroic Bi1-x Ndx Fe O3 (x=0-0.15) ceramics are polarized and their piezoelectric and pyroelectric effects are reported. The success in polarizing the ceramics originates from low electrical conductivities controlled predominantly by the Poole-Frenkel conduction mechanism. Limited internal traps due to reduced oxygen vacancies in the ceramics result in sufficiently low leakage current densities of <30 mA m2 even at a high electric field of 145 kVcm. The piezoelectric d33 coefficients of the ceramics before and after annealing at 550 °C for 4 h are measured to be ∼28 and ∼24 pCN, respectively. These values are higher than those of most major lead-free high-temperature piezoelectric ceramics.
Original languageEnglish
Article number062905
JournalApplied Physics Letters
Volume88
Issue number6
DOIs
Publication statusPublished - 1 Feb 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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