Phase separation of Nd1+xBa2-xCu3O6+δ during annealing processing

M. Yoshizumi, Y. Nakamura, T. Izumi, Y. Shiohara, Y. Ikuhara, T. Sakuma

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    In order to investigate phase separation in solid, Nd1+xBa2-xCu3O6+δ powders with different compositions were annealed under different annealing conditions. The temperature - substitution ratio - oxygen content phase diagram of Nd1+xBa2-xCu3O6+δ solid solution (Nd123ss) was constructed. The condition to occur Nd123ss phase separation was clarified by investigating the compositional fluctuation, XRD pattern, the time dependences of Tc properties and oxygen content. Consequently, only orthorhombic phase with small x can separate into two orthorhombic phases with larger and smaller x by the spinodal decomposition mechanism.

    Original languageEnglish
    Pages (from-to)354-358
    Number of pages5
    JournalPhysica C: Superconductivity and its applications
    Volume357-360
    DOIs
    Publication statusPublished - 2001 Aug

    Keywords

    • NdBaCuO
    • Phase diagram
    • Phase separation
    • Solid solution

    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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