Stress and temperature dependence of the direct piezoelectric charge coefficient in lead zirconate titanate ceramics

Russell B. Stimpson; Harvey D. Wiederick; Benoy K. Mukherjee; Stewart Sherrit

doi:10.1117/12.305584

16 April 1998 Stress and temperature dependence of the direct piezoelectric charge coefficient in lead zirconate titanate ceramics

Russell B. Stimpson, Harvey D. Wiederick, Benoy K. Mukherjee, Stewart Sherrit

Author Affiliations +

Proceedings Volume 3321, 1996 Symposium on Smart Materials, Structures, and MEMS; (1998) https://doi.org/10.1117/12.305584
Event: Smart Materials, Structures and MEMS, 1996, Bangalore, India

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.

Citation Download Citation

Russell B. Stimpson, Harvey D. Wiederick, Benoy K. Mukherjee, and Stewart Sherrit "Stress and temperature dependence of the direct piezoelectric charge coefficient in lead zirconate titanate ceramics", Proc. SPIE 3321, 1996 Symposium on Smart Materials, Structures, and MEMS, (16 April 1998); https://doi.org/10.1117/12.305584

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