A polyethylene glycol-assisted route to synthesize Pb(Ni1/3Nb2/3)O3-PbTiO3 in pure perovskite phase

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)510-515
Number of pages6
JournalJournal of Alloys and Compounds
Volume480
Issue number2
DOIs
Publication statusPublished - 8 Jul 2009

Keywords

  • Ceramics
  • Ferroelectrics
  • Solid-state reactions
  • Thermal analysis

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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