Superconducting properties of niobium-doped YBaCuNbO superconductors

M. H. Abdullah, B. T. Tan

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Superconducting properties of the YBaCuNbO system of nominal composition YBa2Cu3-zNbzOx, with 0 ≤ z ≤ 0.1, are being investigated by XRD, and measurements of d.c. electrical resistivity and magnetic susceptibility as a function of temperature. XRD diffractograms showed the unambiguous existence of the YBa2NbOy cubic perovskite phase, besides the YBa2Cu3Ox (YBCO) orthorhombic perovskite phase, for z > 0.03. The superconducting zero resistivity temperature, Tc0, of the system increased slightly with the increase of z, reaching the maximum at z = 0.02. The temperature at the onset of Meissner effect, Ts0, also indicated a similar enhancement. The enhancement in Ts0 from the ZFC data was higher than that from the FC data. The introduction of Nb from the starting oxide of Nb2O5 probably improved the oxygen content of the YBCO phase, and subsequently enhanced the superconducting transition temperatures.

    Original languageEnglish
    Pages (from-to)93-96
    Number of pages4
    JournalSolid State Communications
    Volume93
    Issue number1
    DOIs
    Publication statusPublished - 1995

    Fingerprint

    Niobium
    niobium
    Superconducting materials
    Perovskite
    magnetic permeability
    Meissner effect
    electrical resistivity
    augmentation
    Magnetic susceptibility
    Temperature
    Oxides
    Superconducting transition temperature
    temperature
    transition temperature
    Oxygen
    oxides
    oxygen
    Chemical analysis
    perovskite

    Keywords

    • crystal structure and symmetry
    • high-T superconductors

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Chemistry
    • Condensed Matter Physics
    • Materials Science(all)

    Cite this

    Superconducting properties of niobium-doped YBaCuNbO superconductors. / Abdullah, M. H.; Tan, B. T.

    In: Solid State Communications, Vol. 93, No. 1, 1995, p. 93-96.

    Research output: Contribution to journalArticle

    Abdullah, M. H. ; Tan, B. T. / Superconducting properties of niobium-doped YBaCuNbO superconductors. In: Solid State Communications. 1995 ; Vol. 93, No. 1. pp. 93-96.
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