Novel aqueous solution route to the low-temperature synthesis of SrBi2Nb2O9 by use of water-soluble Bi and Nb complexes

Taro Asai, Emerson R. Camargo, Masato Kakihana, Minoru Osada

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Powders of SrBi2Nb2O9 (SBN) were synthesized using an aqueous solution method from mixtures of all water-soluble compounds including Sr-EDTA, Bi-EDTA and Nb-citrate. Heating of a mixed aqueous solution with the molar ratio of Sr:Bi:Nb:citric acid=1:2:2:10 produced a pale-yellow gelatinous viscous matter without any precipitation, which was subsequently pyrolyzed at 300°C to give a powder precursor for SBN. The formation of a pure Perovskite ferroelectric SBN occurred when the powder precursor was heat-treated in air at temperatures higher than 650°C. A fluorite SBN formed in the 500-600°C range, which appeared to act as an intermediate phase prior to the formation of the Perovskite SBN. The environmentally beneficial aspect of the present aqueous solution route was briefly discussed.

Original languageEnglish
Pages (from-to)113-117
Number of pages5
JournalJournal of Alloys and Compounds
Volume309
Issue number1-2
DOIs
Publication statusPublished - 2000 Sep 14
Externally publishedYes

ASJC Scopus subject areas

  • Metals and Alloys

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