Magnetic order and superconductivity in Eu1.5 Ce0.5RuSr2Cu2 O10

S. Y. Wu, C. C. Yang, F. C. Tsao, W. H. Li, K. C. Lee, H. D. Yang

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AC magnetic susceptibility, x(T), and dc resistivity, p(T), measurements have been performed to study the superconductivity and magnetic properties of a polycrystalline Eu1.5 Ce0.5 RuSr2Cu2 O10. X-ray diffraction shows that the single-phase compound crystallized into a tetragonal symmetry of space group I4/mmm. Ru spin ordering and superconductivity at 75 and 37 K, respectively, were evident in x(T). The magnetic responses associated with the Ru spin ordering were found to be strongly reduced by a weak applied field, indicating an antiferromagnetic character for the Ru moments. A two-step transition to the superconducting state was observed in p(T), where an intra-granular transition at TC1=37 K and an inter-granular transition at TC2=20 K were clearly seen. These observations confirm the coexistence of superconductivity and magnetic order at low temperatures.

Original languageEnglish
Pages (from-to)693-697
Number of pages5
JournalJournal of Low Temperature Physics
Issue number3-4
StatePublished - May 2003


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