Lead magnesium niobate-lead titanate ceramic fibres fabricated by a modified sol-gel technique

Kwok Ho Lam, Helen Lai Wa Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Lead magnesium niobate-lead titanate (PMN-PT) ceramic fibres with a nominal composition of 0.65Pb(Mg1/3Nb2/3)O3-0. 35PbriO3have been fabricated by a modified sol-gel technique. The ceramic fibres with 100 μm diameter were well-crystallized after being calcined at 850°C and sintered at 1200°C. After being poled, the electromechanical coefficient of the single PMN-PT ceramic fibre is 0.5. The relative permittivity of the single ceramic fibre was higher than that of a ceramic disc while their hysteresis loops are comparable. The characterization of the ceramic fibres reveals that the modified sol-gel method can be used to fabricate PMN-PT ceramic fibres with good piezoelectric and ferroelectric properties.
Original languageEnglish
Pages (from-to)25-29
Number of pages5
JournalFerroelectrics
Volume326
DOIs
Publication statusPublished - 1 Dec 2005

Keywords

  • Hysteresis D-E measurement
  • Impedance measurement
  • PMN-PT ceramic fibre

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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