A polyethylene glycol-assisted route to synthesize Pb(Ni1/3Nb2/3)O3-PbTiO3with improved electric properties

Yin Ye, Shuhui Yu, Haitao Huang, Li Min Zhou

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Polyethylene glycol (PEG)-assisted solid state reaction route is employed to prepare the relaxor-type ferroelectric powders and ceramics of (1-x)Pb(Ni1/3Nb2/3)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 Tcreach 4987 and 24307, respectively, at a frequency of 1 kHz. The piezoelectric constant d33is 460 pC/N.
Original languageEnglish
Title of host publicationInternational Conference on Smart Materials and Nanotechnology in Engineering
Volume6423
DOIs
Publication statusPublished - 1 Dec 2007
EventInternational Conference on Smart Materials and Nanotechnology in Engineering - Harbin, China
Duration: 1 Jul 20074 Jul 2007

Conference

ConferenceInternational Conference on Smart Materials and Nanotechnology in Engineering
CountryChina
CityHarbin
Period1/07/074/07/07

Keywords

  • Dielectric properties
  • Ferroelectric properties
  • Interaction
  • PEG200
  • Perovskite
  • Piezoelectric properties
  • PNN-PT
  • Pyrochlore

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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