Experimental investigation into the effect of substrate clamping on the piezoelectric behaviour of thick-film PZT elements


Torah, R N, Beeby, S P and White, N M (2004) Experimental investigation into the effect of substrate clamping on the piezoelectric behaviour of thick-film PZT elements. J. Phys. D: Appl. Phys., 37, 1074-1078.

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Description/Abstract

This paper details an experimental investigation of the clamping effect associated with thick-film piezoelectric elements printed on a substrate. The clamping effect reduces the measured piezoelectric coefficient, d33, of the film. This reduction is due to the influence of the d31 component in the film when a deformation of the structure occurs, by either the direct or indirect piezoelectric effect. Theoretical analysis shows a reduction in the measured d33 of 62%, i.e. a standard bulk lead zirconate titanate (PZT)-5H sample with a manufacturer specified d33 of 593pC/N would fall to 227.8pC/N. To confirm this effect, the d33 coefficients of five thin bulk PZT-5H samples of 220µm thickness were measured before and after their attachment to a metallized 96% alumina substrate. The experimental results show a reduction in d33 of 74% from 529pC/N to 139pC/N. The theoretical analysis was then applied to existing University of Southampton thick-film devices. It is estimated that the measured d33 value of 131pC/N of the thick-film devices is the equivalent of an unconstrained d33 of 345pC/N.

Item Type: Article
ISSNs: 0022-3727
Keywords: piezoelectrics, thick-film, clamping effect
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 259306
Date Deposited: 30 Apr 2004
Last Modified: 14 Apr 2014 11:20
Projects:
AF: Thick-Film Piezoelectrics for MEMs: Optimisation & Applications
Funded by: EPSRC (GR/A10024/01)
1 October 2001 to 30 September 2006
Further Information:Google Scholar
ISI Citation Count:30
URI: http://eprints.soton.ac.uk/id/eprint/259306

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