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Proceedings Paper

Fabrication and characterization of relaxor-ferroelectric 0.55Pb(Ni1/3Nb2/3)O3-0.45Pb(Zr0.3Ti0.7)O3 ceramics with sintering aid
Author(s): Jianzhou Du; Jinhao Qiu; Kongjun Zhu; Hongli Ji; Yuansheng Chen
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Paper Abstract

A traditional solid-state sintering method was used to fabricate 0.55Pb(Ni1/3Nb2/3)O3-0.45Pb(Zr0.3Ti0.7)O3 (0.55PNN-0.45PZT) relaxor-ferroelectric ceramics with CuO as sintering aid. The influence of xCuO additions (x=0.0, 0.2, 0.4, 0.6, 0.8 wt.%) on the microstructure and electrical properties of the 0.55PNN-0.45PZT ceramics was investigated. X-ray diffraction patterns demonstrated that all specimens formed a typical perovskite structure with pseudo-cubic phase. Cu2+ ions entered into the B sites in ABO3 structure for the PNN-PZT solid solution ceramics. The additions of CuO improved the sinterability of the 0.55PNN-0.45PZT ceramics. The grain size and density of these specimens increased slightly with increasing amounts of CuO addition. The specimen with 0.4 wt.% CuO addition achieves the maximum value of density ρ~8108 kg/m3. Meanwhile, the piezoelectric, dielectric and ferroelectric properties also enhanced significantly with increasing amount of CuO addition. Excellent properties, d33~777 pC/N, kp~55%, ε1 r~7365, tanδ~2.9%, pr~18.86 μC/cm2, and Ec~3.52 kV/cm were obtained for the 0.55PNN-0.45PZT ceramics with 0.4 wt.% CuO addition sintered at 1125°C for 2 h.

Paper Details

Date Published: 3 April 2012
PDF: 6 pages
Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 840906 (3 April 2012); doi: 10.1117/12.923348
Show Author Affiliations
Jianzhou Du, Nanjing Univ. of Aeronautics and Astronautics (China)
Jinhao Qiu, Nanjing Univ. of Aeronautics and Astronautics (China)
Kongjun Zhu, Nanjing Univ. of Aeronautics and Astronautics (China)
Hongli Ji, Nanjing Univ. of Aeronautics and Astronautics (China)
Yuansheng Chen, Nanjing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 8409:
Third International Conference on Smart Materials and Nanotechnology in Engineering

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