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The Piezoelectric and Dielectric Properties of 0.3Pb(Ni1/3Nb2/3)O3xPbTiO3–(0.7−x)PbZrO3 Ferroelectric Ceramics Near the Morphotropic Phase Boundary

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0.3Pb(Ni1/3Nb2/3)O3xPbTiO3–(0.7−x)PbZrO3 (x=0.33–0.43) piezoelectric ceramics were prepared by the one-step solid-state reaction method. X-ray diffraction analysis showed the coexistence of rhombohedral and tetragonal phases at the composition x=0.39, which is the morphotropic phase boundary (MPB) for this system. The dielectric, ferroelectric, and piezoelectric properties of 0.3Pb(Ni1/3Nb2/3)O3xPbTiO3–(0.7−x)PbZrO3 were investigated as a function of the content of PbTiO3. The ceramics at MPB showed large remnant polarization, low coercive field, and good piezoelectric properties. The results showed that piezoelectric ceramics with high piezoelectric constant and high Curie temperature also can be obtained in Pb(Ni1/3Nb2/3)O3–PbTiO3–PbZrO3 system with low Pb(Ni1/3Nb2/3)O3 content.
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Document Type: Research Article

Affiliations: 1: The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China 2: Department of Physics, Shanghai University, Shanghai 200444, China

Publication date: 2010-03-01

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