The preparation of a novel layered lead titanate and its conversion to the perovskite lead titanate, PbTiO3

GR Blake, AR Armstrong, E Sastre, Wuzong Zhou, Paul Anthony Wright

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A novel layered lead titanate with the approximate composition PbTiO2(CO3)(0.3) (NO3)(0.35)(OH) has been synthesized hydrothermally under acidic conditions. The structure has been solved and refined from X-ray and neutron powder diffraction data in the space group P -3 1 m, with cell dimensions a = 5.1787(5) Angstrom and c = 8.5222(7) Angstrom. The titanate layers possess a gibbsite-like structure: lead cations and oxyanions such as carbonate and nitrate are included between the layers. Upon heating the solid loses water, carbon dioxide and nitrogen dioxide and converts via a poorly crystalline intermediate phase to the perovskite PbTiO3. The conversion is complete by 550 degreesC; continued heating results in an increase in crystallinity. (C) 2001 Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1837-1845
JournalMater. Res. Bull.
Volume36
Publication statusPublished - 1 Sept 2001

Keywords

  • layered compound
  • hydrothermal synthesis
  • X-ray and neutron diffraction

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