Title :
The complex piezoelectric response of relaxor ferroelectrics
Author :
Li, Jie-Fang ; Viehland, Dwight
Author_Institution :
Dept. of Mater. Sci. & Eng., Illinois Univ., Urbana, IL, USA
Abstract :
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
Keywords :
dielectric losses; ferroelectric materials; lead compounds; piezoceramics; AC drive; DC bias; PMN-PT; PbMgNbO3-PbTiO3; complex piezoelectric response; nonlinearity; piezoelectric coefficient; piezoelectric loss factor; polarization saturation; relaxor ferroelectric; single-beam interferometry; Dielectric losses; Electric variables measurement; Ferroelectric materials; Frequency measurement; Piezoelectric polarization; Piezoelectricity; Relaxor ferroelectrics; Strain measurement; Temperature; Titanium compounds;
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
DOI :
10.1109/ISAF.1996.598202
