Fabrication and Electrical Properties of Grain-Oriented 0.91Pb(Zn1/3Nb2/3)O3– 0.09PbTiO3 Ceramics
(200) grain-oriented 0.91Pb(Zn1/3Nb2/3)O3–0.09PbTiO3 (PMN–0.09PT) piezoelectric ceramics with a degree of orientation of 0.5052 have been produced from melt by a directional solidification method. The dielectric, ferroelectric, and piezoelectric properties were investigated, e.g., ε~4200, tanδ~0.8%, d33~2100pC/N, kt~58%, and k33~90%, some of these values are comparable to those of ~PZN–PT single crystals. The strain–electric-field curve with a maximum strain of 0.49% at a field of 7kV/cm and well-saturated hysteresis loops with a Pr~32 mC/cm2 were recorded. The results demonstrate that the directional solidification method is a promising technique to fabricate high performance grain-oriented PZN–PT ceramics.
Yuan Ming Huang
W. X. Cheng et al., "Fabrication and Electrical Properties of Grain-Oriented 0.91Pb(Zn1/3Nb2/3)O3– 0.09PbTiO3 Ceramics", Materials Science Forum, Vols. 663-665, pp. 555-558, 2011