Lead hafnate (PbHfO3) perovskite powders synthesized by the oxidant peroxo method

Emerson R. Camargo, Masato Kakihana

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Perovskite lead hafnate (PbHfO3, PH) nanoparticles that were free from halides and organics were synthesized via the oxidant peroxo method. Stoichiometric amounts of hafnium nitrate (HfO(NO3)2) and lead nitrate (PbHfO3) were dissolved in a diluted hydrogen peroxide (H2O2) aqueous solution, which was slowly added to a solution of H2O2 and ammonia (NH3) (pH 11). The lead-hafnium precipitate obtained was filtered and washed, to eliminate all nitrate ions. The precipitate was dried, ground, and calcined at temperatures of 400°-900°C. A tetragonal intermediate phase was identified using X-ray diffractometry and Raman spectroscopy during the calcination process, followed by the crystallization of the orthorhombic PH phase at ∼700°C.

Original languageEnglish
Pages (from-to)2107-2109
Number of pages3
JournalJournal of the American Ceramic Society
Volume85
Issue number8
DOIs
Publication statusPublished - 2002 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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