STRUCTURAL AND SUPERCONDUCTING PROPERTIES OF LA2-XSRXCUO4+Y (0-LESS-THAN-X-LESS-THAN-0.15) PREPARED BY ROOM-TEMPERATURE CHEMICAL OXIDATION

C. Rial, E. Morán, M.A. Alario-Franco, U. Amador, N.H. Andersen

    Research output: Contribution to journalJournal articleResearch

    Abstract

    The presence of interstitial oxygen in room temperature chemically oxidized La2-xSrxCuO4+y, (0.15<x) induces modifications in the crystal structure and the superconducting properties of these cuprates. The existence of a structural limit for the insertion of oxygen under the current oxidation conditions, related to the relieving of the internal strain of these materials, is proposed. Besides, oxidized materials show an almost constant T-c close to that corresponding to the optimum hole doping concentration. The coincidence of both features is remarked upon and discussed.
    Original languageEnglish
    JournalPhysica C: Superconductivity and its Applications
    Volume254
    Issue number3-4
    Pages (from-to)233-248
    ISSN0921-4534
    DOIs
    Publication statusPublished - 1995

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