A new method to determine the un-poled elastic properties of ferroelectric materials



Bowen, Chris R, Dent, Andrew C, Stevens, Ron, Cain, Markys G ORCID: 0000-0002-8413-3104 and Avent, Andrew
(2017) A new method to determine the un-poled elastic properties of ferroelectric materials. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 18 (1). pp. 264-272.

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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.

Item Type: Article
Uncontrolled Keywords: Ferroelectric, un-poled, poled, piezoelectric ceramic, elastic
Depositing User: Symplectic Admin
Date Deposited: 05 Feb 2019 16:43
Last Modified: 19 Jan 2023 01:05
DOI: 10.1080/14686996.2017.1302274
Open Access URL: https://doi.org/10.1080/14686996.2017.1302274
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3032310