Combustion synthesis of perovskite LnCrO3 powders using ammonium dichromate

J. J. Kingsley, L. R. Pederson

    Research output: Contribution to journalArticle

    93 Citations (Scopus)

    Abstract

    Fine-particle LnCrO3 perovskites, where Ln = rare earths, have been prepared by the exothermic redox decomposition of ammonium dichromate, lanthanum nitrate and glycine mixtures. The self-redox decomposition of ammonium dichromate enabled LnCrO3 to be formed by combustion synthesis using less glycine than mixtures containing chromium nitrate. Autoignition temperatures for precursor mixtures containing ammonium dichromate were lower than those containing chromium nitrate (< 170°C versus 180 to 210°C, respectively). Ammonium dichromate-containing precursors combusted at lower temperatures and produced powders having higher surface areas than precursor solutions containing chromium nitrate.

    Original languageEnglish
    Pages (from-to)89-96
    Number of pages8
    JournalMaterials Letters
    Volume18
    Issue number1-2
    DOIs
    Publication statusPublished - Nov 1993

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    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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