Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30671
Title: A polyethylene glycol-assisted route to synthesize Pb(Ni1/3Nb2/3)O3-PbTiO3 in pure perovskite phase
Authors: Ye, Y
Yu, S
Huang, H 
Zhou, L 
Keywords: Ceramics
Ferroelectrics
Solid-state reactions
Thermal analysis
Issue Date: 2009
Publisher: Elsevier
Source: Journal of alloys and compounds, 2009, v. 480, no. 2, p. 510-515 How to cite?
Journal: Journal of alloys and compounds 
Abstract: Ferroelectric relaxors (1 - x)Pb(Ni1/3Nb2/3)O3-xPbTiO3 (PNN-PT) with a composition (x = 0.36) near the morphotropic phase boundary (MPB) were prepared by a polyethylene glycol (PEG)-assisted solid-state reaction route. PEG with a molecular weight of 200 was introduced during the ball milling process of the raw oxide powders. XRD and TG/DSC results demonstrated that the interaction between PbO and PEG favors the transformation of lead-rich pyrochlore to lead-deficient pyrochlore, thus facilitating the formation of perovskite phase. Consequently, pure perovskite powders were synthesized at a relatively low temperature of 850 °C. Ceramics fabricated with the PEG-assisted route show a room temperature dielectric constant of 4987 and a maximum dielectric constant (at Tmax) of 24,307 at a frequency of 1 kHz. The piezoelectric constant d33 measured was 460 pC/N.
URI: http://hdl.handle.net/10397/30671
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2009.01.115
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