Granular superconductivity in the electron doped compounds ln2-xmxcu04-, (Ln=pr, nd, sm, eu; m=ce, th)

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Abstract

We study the superconducting properties of the electron-doped compounds Ln2-, M, Cu04-, (Ln = Pr, Nd, Sm, Eu; M = Ce, Th). Three characteristic temperatures of the superconducting transition are defined, corresponding to: the macroscopic resistive transition midpoint (Tcmid), the diamagnetic signal onset (Tcx), and the intragrain transition temperature (Tcg). Tcx and Tcg are found to vary weakly in the series of the studied compounds, in contrast with T,.mid, which is strongly reduced in and Sml.&5Th0.15Cu04-y samples.

Original languageEnglish
Pages (from-to)441-446
Number of pages6
JournalEurophysics Letters
Volume12
Issue number5
DOIs
StatePublished - 1 Jul 1990
Externally publishedYes

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