Combustion synthesis of YBa2Cu3O7-x: glycine/metal nitrate method

L. R. Pederson, G. D. Maupin, W. J. Weber, D. J. McReady, R. W. Stephens

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    Abstract

    A combustion synthesis method has been developed to simply and rapidly prepare YBa2Cu3O7-x and YBa2Cu3O7-x/Ag from an aqueous solution of the metal nitrates and glycine. Glycine served both as the fuel for combustion and as a complexant, important to prevent inhomogeneous precipitation of individual components prior to combustion. Ash collected following combustion consisted of well-mixed, soft agglomerates of barium carbonate, yttrium oxide, cupric oxide, and/or copper metal, depending on the ratio of fuel to oxidant. This mixture was calcined at 900°C for 4 h to convert the product to YBa2Cu3O7-x. Samples sintered at 950°C for 8 h and annealed in oxygen at 450°C for a like time showed a Tc (midpoint) of 92.5 K with a width of 1.4 K and a high degree of phase-purity. This synthesis method is well suited to the preparation of a wide variety of multicomponent ceramics.

    Original languageEnglish
    Pages (from-to)437-443
    Number of pages7
    JournalMaterials Letters
    Volume10
    Issue number9-10
    DOIs
    Publication statusPublished - Feb 1991

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    ASJC Scopus subject areas

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

    Cite this

    Pederson, L. R., Maupin, G. D., Weber, W. J., McReady, D. J., & Stephens, R. W. (1991). Combustion synthesis of YBa2Cu3O7-x: glycine/metal nitrate method. Materials Letters, 10(9-10), 437-443. https://doi.org/10.1016/0167-577X(91)90235-X