A method to determine the aging rate of thick-film PZT layers
A method to determine the aging rate of thick-film PZT layers
Screen printed lead zirconate titanate (PZT) layers offer possibilities for both sensing and actuation applications. PZT materials are known to suffer a long-term ageing process that can affect their performance as functional materials. Measuring the rate of this ageing on thick-film piezoelectric materials is difficult due to the presence of a substrate, and suitable methods have not been reported in the literature. A technique for measuring the ageing rate of the d31 coefficient is described in this paper, and includes a composite test structure based on a steel substrate. The d31 coefficient is found to age at ?4.4% per time decade after polarization with no external stresses (for PZT-5H, a soft piezoelectric material). A method is also presented for measuring the ageing of the dielectric constant, K33, and this is found to have an ageing rate of ?1.34% per time decade. Techniques for exploring cyclical stress induced ageing of d31 are further described, and an interesting linear ageing characteristic is demonstrated.
663-670
Glynne-Jones, P.
6ca3fcbc-14db-4af9-83e2-cf7c8b91ef0d
Beeby, S.P.
ba565001-2812-4300-89f1-fe5a437ecb0d
White, N.M.
c7be4c26-e419-4e5c-9420-09fc02e2ac9c
June 2001
Glynne-Jones, P.
6ca3fcbc-14db-4af9-83e2-cf7c8b91ef0d
Beeby, S.P.
ba565001-2812-4300-89f1-fe5a437ecb0d
White, N.M.
c7be4c26-e419-4e5c-9420-09fc02e2ac9c
Glynne-Jones, P., Beeby, S.P. and White, N.M.
(2001)
A method to determine the aging rate of thick-film PZT layers.
Measurement Science and Technology, 12 (6), .
(doi:10.1088/0957-0233/12/6/302).
Abstract
Screen printed lead zirconate titanate (PZT) layers offer possibilities for both sensing and actuation applications. PZT materials are known to suffer a long-term ageing process that can affect their performance as functional materials. Measuring the rate of this ageing on thick-film piezoelectric materials is difficult due to the presence of a substrate, and suitable methods have not been reported in the literature. A technique for measuring the ageing rate of the d31 coefficient is described in this paper, and includes a composite test structure based on a steel substrate. The d31 coefficient is found to age at ?4.4% per time decade after polarization with no external stresses (for PZT-5H, a soft piezoelectric material). A method is also presented for measuring the ageing of the dielectric constant, K33, and this is found to have an ageing rate of ?1.34% per time decade. Techniques for exploring cyclical stress induced ageing of d31 are further described, and an interesting linear ageing characteristic is demonstrated.
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Published date: June 2001
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EEE
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Local EPrints ID: 256124
URI: http://eprints.soton.ac.uk/id/eprint/256124
ISSN: 0957-0233
PURE UUID: 7f811b23-46f8-4da0-a172-5c7e6eca2568
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Date deposited: 31 Oct 2001
Last modified: 15 Mar 2024 03:03
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Author:
S.P. Beeby
Author:
N.M. White
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