Oxygen intercalation homogeneity and electrical transport in superconducting Ba2YCu3O7- crystals

A. T. Fiory, S. Martin, L. F. Schneemeyer, R. M. Fleming, A. E. White, J. V. Waszczak

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

The intercalation of oxygen in twinned single crystals of Ba2YCu3O7-α occurs by diffusion along basal a-b planes, as shown by time-dependent resistivity measurements at elevated temperatures. Separation of the oxygen-deficient 60-K phase in crystals annealed in O2 is revealed by an anomalous temperature dependence of the resistance along the c direction. Susceptibility analysis shows that oxygenation and the sharpness of the superconducting transition can be enhanced significantly, with no change in Tc, by F-ion implantation followed by rediffusion of oxygen.

Original languageEnglish
Pages (from-to)7129-7132
Number of pages4
JournalPhysical Review B
Volume38
Issue number10
DOIs
StatePublished - 1 Jan 1988

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