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Proceedings Paper

Stress and temperature dependence of the direct piezoelectric charge coefficient in lead zirconate titanate ceramics
Author(s): Russell B. Stimpson; Harvey D. Wiederick; Benoy K. Mukherjee; Stewart Sherrit
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Paper Abstract

We describe an experiment in which a ramped or step stress can be applied to a piezoelectric sample and the charge generated on the sample can be determined by measuring the short-circuit current with a very high impedance electrometer. The low frequency direct piezoelectric charge coefficient, d33, can then be determined and is found to be substantially non-linear in stress up to pressures of 60 MPa for all the types of Lead Zirconate Titanate (PZT) that we have studied. When a step stress is applied, the generated current shows a time dependence after the application of the stress and we believe that this is due to the relatively slow movement of 90 degree(s) domain walls in the ceramic. Our results can be understood on the basis of an activation energy model and average activation energies for the PZT types studied ranged from 0.2 to 0.7 eV. The charge coefficient is thus a function of the applied stress and of the temperature and frequency of measurement.

Paper Details

Date Published: 16 April 1998
PDF: 8 pages
Proc. SPIE 3321, 1996 Symposium on Smart Materials, Structures, and MEMS, (16 April 1998); doi: 10.1117/12.305584
Show Author Affiliations
Russell B. Stimpson, Royal Military College of Canada (Canada)
Harvey D. Wiederick, Royal Military College of Canada (Canada)
Benoy K. Mukherjee, Royal Military College of Canada (Canada)
Stewart Sherrit, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 3321:
1996 Symposium on Smart Materials, Structures, and MEMS
Vasu K. Aatre; Vijay K. Varadan; Vasundara V. Varadan, Editor(s)

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