3 Citations (Scopus)

Abstract

Piezoelectric devices with complex electrode geometries often contain ferroelectric regions that experience little or no electric field and remain unpolarised. Since the un-poled and poled material properties differ it is desirable to account for these regions in a device when developing predictive models or to design piezoelectric transducers. The lack of published data on the elastic properties for un-poled ferroelectrics, specifically the numerous commercial compositions such as lead zirconate titanate, reflects the difficulty of experimental measurement. In this work, a method for predicting un-poled properties from more commonly available poled data has been developed. A new method of calculating these properties is presented which provides a rapid and practical solution to the problem of evaluating the isotropic stiffness and Poisson’s ratio for an un-poled ferroelectric material. The way in which this calculation has been derived and validated is presented and detailed comparisons are made with alternative methods and experimental data.

LanguageEnglish
Pages253-263
Number of pages11
JournalScience and Technology of Advanced Materials
Volume18
Issue number1
Early online date15 Mar 2017
DOIs
StatusPublished - 12 Apr 2017

Fingerprint

Ferroelectric materials
Piezoelectric devices
Piezoelectric transducers
Poisson ratio
Materials properties
Electric fields
Stiffness
Electrodes
Geometry
Chemical analysis
lead titanate zirconate

Keywords

  • elastic
  • Ferroelectric
  • piezoelectric ceramic
  • poled
  • un-poled

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

A new method to determine the un-poled elastic properties of ferroelectric materials. / Bowen, Chris R.; Dent, Andrew C.; Stevens, Ron; Cain, Markys G.; Avent, Andrew.

In: Science and Technology of Advanced Materials, Vol. 18, No. 1, 12.04.2017, p. 253-263.

Research output: Contribution to journalArticle

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AU - Stevens, Ron

AU - Cain, Markys G.

AU - Avent, Andrew

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