Fabrication and characterization of relaxor-ferroelectric 0.55Pb(Ni1/3Nb2/3)O3-0.45Pb(Zr0.3Ti0.7)O3 ceramics with sintering aid

Jianzhou Du; Jinhao Qiu; Kongjun Zhu; Hongli Ji; Yuansheng Chen

doi:10.1117/12.923348

2 April 2012 Fabrication and characterization of relaxor-ferroelectric 0.55Pb(Ni_1/3Nb_2/3)O₃-0.45Pb(Zr_0.3Ti_0.7)O₃ ceramics with sintering aid

Jianzhou Du, Jinhao Qiu, Kongjun Zhu, Hongli Ji, Yuansheng Chen

Author Affiliations +

Proceedings Volume 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering; 840906 (2012) https://doi.org/10.1117/12.923348
Event: Third International Conference on Smart Materials and Nanotechnology in Engineering, 2011, Shenzhen, China

Abstract

A traditional solid-state sintering method was used to fabricate 0.55Pb(Ni_1/3Nb_2/3)O₃-0.45Pb(Zr_0.3Ti_0.7)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, k_p~55%, ε₁ r~7365, tanδ~2.9%, p_r~18.86 μC/cm², and E_c~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.

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Jianzhou Du, Jinhao Qiu, Kongjun Zhu, Hongli Ji, and Yuansheng Chen "Fabrication and characterization of relaxor-ferroelectric 0.55Pb(Ni_1/3Nb_2/3)O₃-0.45Pb(Zr_0.3Ti_0.7)O₃ ceramics with sintering aid", Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 840906 (2 April 2012); https://doi.org/10.1117/12.923348

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