A polyethylene glycol-assisted route to synthesize Pb(Ni1/3Nb2/3)O3-PbTiO3 with improved electric properties

Yin Ye; Shuhui Yu; Haitao Huang; Limin Zhou

doi:10.1117/12.779871

1 November 2007 A polyethylene glycol-assisted route to synthesize Pb(Ni_1/3Nb_2/3)O₃-PbTiO₃with improved electric properties

Yin Ye, Shuhui Yu, Haitao Huang, Limin Zhou

Author Affiliations +

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64232F (2007) https://doi.org/10.1117/12.779871
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

Polyethylene glycol (PEG)-assisted solid state reaction route is employed to prepare the relaxor-type ferroelectric powders and ceramics of (1-x)Pb(Ni_1/3Nb_2/3)O₃−xPbTiO₃ (PNN-PT) with the morphotropic phase boundary (MPB) composition at x=0.36 (0.64PNN-0.36PT). PEG additive with the molecular weight of 200 is introduced into PNN-PT oxide precursors in order to obtain the perovskite phase. The XRD and TG/DSC results demonstrate that the interactions between PbO and PEG favor the transformation from the lead-rich pyrochlore to the lead-deficient pyrochlore, thus facilitating the formation of the perovskite. Consequently, nearly pure perovskite 0.64PNN-0.36PT powders are synthesized at a relatively low temperature of 850 °C. A significant improvement of electric properties of the ceramics sintered at 1200 °C is achieved by PEG modification. The dielectric constant at room temperature and the maximum dielectric constant at T_c reach 4987 and 24307, respectively, at a frequency of 1 kHz. The piezoelectric constant d₃₃ is 460 pC/N.

Citation Download Citation

Yin Ye, Shuhui Yu, Haitao Huang, and Limin Zhou "A polyethylene glycol-assisted route to synthesize Pb(Ni_1/3Nb_2/3)O₃-PbTiO₃with improved electric properties", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64232F (1 November 2007); https://doi.org/10.1117/12.779871

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