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The complex piezoelectric response of relaxor ferroelectrics

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2 Author(s)
J. -F. Li ; Dept. of Mater. Sci. & Eng., Illinois Univ., Urbana, IL, USA ; D. Viehland

The amplitude-dependent complex piezoelectric response of Pb(Mg 1/3Nb2/3)O3-PbTiO3 (PMN-PT) relaxors has been investigated using a single-beam interferometric technique as a function of AC electrical drive, superimposed DC bias, and measurement frequency. Large-induced longitudinal piezoelectric coefficients (d33) were observed over a wide DC bias range below polarization saturation. Investigations as a function of AC drive revealed the presence of strong nonlinearities, where the value of d33 increased by 50% with increasing drive. In addition, large unexpected piezoelectric loss factors (Tanδ(piezo)) were observed, in materials which where otherwise characterized by the lack of dielectric loss and anhysteretic behavior

Published in:

Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on  (Volume:2 )

Date of Conference:

18-21 Aug 1996