Study of superconducting properties of oxygen deficient GdBa2Cu3O7-y by a heating cycle technique

Herng-Er Horng, J. C. Jao, M. H. Hsieh, Hong-Chang Yang, B. C. Yao, C. H. Chen

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    3 Citations (Scopus)

    Abstract

    We have studied oxygen deficient GdBa2Cu3O7-y samples by heating cycle technique and correlated the resistivity data with the oxygen deficiency derived from TGA. An orthorthombic to tetragonal phase transformation was found at about 720 K and it is consistent with that derived from the X-ray data. The resistivity is hysteretic cooling and shows semiconducting behavior for y≥0.7. Localization was found for samples with semiconductive properties. The electron-phonon coupling constant derived from the electric and magnetic measurements is λtr=0.31 which suggests a weak electron-phonon coupling in high-Tc oxides.

    Original languageEnglish
    Pages (from-to)480-484
    Number of pages5
    JournalPhysica C: Superconductivity and its applications
    Volume158
    Issue number3
    DOIs
    Publication statusPublished - 1989 May 1

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering

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