Effect of Blocking and Superconducting Layer Doping on the Superconductivity and Magnetic Properties of Polycrystalline Sr2CaCu2O6

A. Sklyarova*, S. Shinoda, T. Nagumo, V. I. Chizhik, V. V. Matveev, J. Lindén, R. Pohjonen, T. Suzuki, T. Nakayama, H. Suematsu

*Tämän työn vastaava kirjoittaja

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    Abstrakti

    The possible difference in the properties upon doping the Sr2CaCu2O6 superconducting or blocking layers with Fe and Eu respectively was investigated in this work. The homogeneous Sr2−yEuyCaCu2O6+δ and Sr2CaCu2−xFexO6+δ (y = 0, 0.1, 0.5, x = 0, 0.05) compounds were produced by a high-pressure synthesis route. Judging by the magnetic susceptibility measurements, all samples exhibit a superconductivity transition and the Eu/Fe concentration dependencies on the diamagnetic moment and average Tc have been constructed using the experimental data. As a result, an unusual behavior of the Tc value was observed for the samples with doped Eu: a fivefold reduction in the europium concentration in the sample does not give a noticeable effect on the transition temperature value while the diamagnetic signal becomes more stronger. Complex superconducting dome was found for Eu-doped material: 0.1 ≤ y ≤ 0.5 region Tc vs. concentration data were approximated by inverted parabola-like curve with a maximum at y = 0.3. Difference in properties of the Eu and Fe-doped samples was also found in the behavior of the hysteresis loops showed the opposite orientations.

    AlkuperäiskieliEnglanti
    Sivut2711-2717
    Sivumäärä7
    JulkaisuJournal of Superconductivity and Novel Magnetism
    Vuosikerta31
    Numero9
    DOI - pysyväislinkit
    TilaJulkaistu - 1 syyskuuta 2018
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Sormenjälki Sukella tutkimusaiheisiin 'Effect of Blocking and Superconducting Layer Doping on the Superconductivity and Magnetic Properties of Polycrystalline Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>6</sub>'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

    Viittausmuodot