Processing and characterization of sol-gel derived modified PbTiO3 for ferroelectric composites

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Abstract

The aim of this work is the preparation and characterization of ferroelectric polymer/ceramic composites for use as piezoelectric and pyroelectric detectors. We have developed a sol-gel technique for the preparation of lead titanate and modified lead titanate ceramic powders (with calcium and manganese). The preparation of the ferroelectric ceramic powders by the sol-gel technique allows one to obtain pure ceramic powders with controlled morphology. 0-3 composites are made by dispersing ceramic powders on a P(VDF-TrFE) matrix with a volume fraction of 50%. We have prepared composite films with 100 μm thickness with aluminum electrodes on both surfaces, to study their electric, dielectric, ferroelectric, piezoelectric and pyroelectric properties. The electroactive properties obtained for these composites seem promising for sensor applications.

Original languageEnglish
Pages (from-to)99-109
Number of pages11
JournalFerroelectrics
Volume228
Issue number1
Publication statusPublished - 1999
Event8th International Workshop on Glasses and Ceramics from Gels - Algarve, Portugal
Duration: 18 Sep 199522 Sep 1995

Keywords

  • sol-gel
  • lead titanate
  • ferroelectric
  • electroactive material
  • composites

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