Dielectric and piezoelectric properties of microwave sintered PZT

P. K. Sharma, Z. Ounaies, V. V. Varadan, V. K. Varadan

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

In this paper, the dielectric and piezoelectric properties of sol-gel derived and microwave sintered PZT are presented. It has been observed that the microwave sintering results in a material with a higher dielectric constant (≈1600) than that sintered by conventional methods (≈1480). It also offers a low dielectric loss tangent and improved d33. Pellets sintered by the microwave method at 1100°C are found to have high hardness (≈1460 MPa) on the Vickers hardness scale with a theoretical density of ≈94% in comparison with that sintered by the conventional method (i.e. ≈980 MPa and ≈84%). From a hysteresis study, the remanent polarization (Pr) and coercive field (Ec) of the microwave sintered PZT are observed to be 340 mC m-2 and 10 kV cm-1, respectively. The value of Ec in the microwave sintered sample is low and this property is desirable for device fabrication of PZT-based smart structures.

Original languageEnglish (US)
Pages (from-to)878-883
Number of pages6
JournalSmart Materials and Structures
Volume10
Issue number5
DOIs
StatePublished - Oct 1 2001

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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