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Lead-free piezoelectric ceramics vs. PZT?

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

Investigations in the development of lead-free piezoelectric ceramics have recently claimed properties comparable to that of PZT-based materials. In this work, the dielectric and piezoelectric properties of the various systems were contrasted in relation to their respective Curie temperatures. Though comparable with respect to Tc, enhanced properties reported in the K,NaNbO 3 family are the result of increased polarizability associated with the Torthor-tertragonal polymorphic phase transition being compositionally shifted downward and not from a morphotropic phase boundary (MPB) as widely reported. As expected, the properties are strongly temperature dependent unlike that observed for MPB systems. Analogous to PZT, enhanced properties are noted for MPB compositions in the Na,BiTiO3-BaTiO 3 and the ternary system with K,BiTiO3, but offer properties significantly lower than that of PZTs. The consequence of a ferroelectric to antiferroelectric transition well below TC further limits their usefulness.
Original languageEnglish
Title of host publication2006 15th IEEE International Symposium on Applications of Ferroelectrics, ISAF
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event2006 15th IEEE International Symposium on Applications of Ferroelectrics, ISAF - Sunset Beach, NC, United States
Duration: 30 Jul 20063 Aug 2006

Publication series

NameIEEE International Symposium on Applications of Ferroelectrics

Conference

Conference2006 15th IEEE International Symposium on Applications of Ferroelectrics, ISAF
PlaceUnited States
CitySunset Beach, NC
Period30/07/063/08/06

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work supported by Office of Naval Research (ONR) and National Institutes of Health (NIH) under grant number P41-RR11795.

Research Keywords

  • Lead-free ceramic
  • Piezoelectric
  • PZT

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