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Structure and Diamagnetic Properties of (Pb0.6SnyCu0.4 − y)Sr2(Y1 − xCax)Cu2Oz

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Abstract

The effect of Sn doping in (Pb0.6Sn y Cu0.4 − y )Sr2(Y1 − x Ca x )Cu2O z with 0 ≤ y ≤ 0.3 and 0 ≤ x ≤ 0.7 was investigated. It was established that a nearly pure 1212 phase can be obtained at 0 ≤ y ≤ 0.1 and 0 ≤ x ≤ 0.3. The obtained XRD patterns as well as the results of the EDX and ICP-AES analyses showed that Sn substitution is possible in the (Pb,Cu)-1212 phase. Superconductivity was observed at 0.4 ≤ x ≤ 0.7. The onset of the diamagnetic transitions varied from 10 to 30 K. The influence of the strong Pb deficiency on the superconducting properties of the samples was discussed.

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Authors and Affiliations

  1. Bulgarian Academy of Sciences, Institute of Solid State Physics, 1784, Sofia, Bulgaria

    N. Balchev

  2. Institut fur Festkorper und Werkstofforschung, 01171, Dresden, Germany

    K. Nenkov

  3. International Laboratory of High Magnetic Fields and Low Temperatures, 53-421, Wroclaw, Poland

    K. Nenkov

  4. Bulgarian Academy of Sciences, Institute of Catalysis, 1113, Sofia, Bulgaria

    B. Kunev

  5. University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria

    A. Souleva

  6. Institute of Physical Chemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria

    Ts. Tsacheva

  7. Department of Inorganic and Physical Chemistry, University of Ghent, Krijgslaan 281 (S3), B-9000, Ghent, Belgium

    S. Hoste

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  1. N. Balchev
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  2. K. Nenkov
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  4. A. Souleva
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  6. S. Hoste
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Balchev, N., Nenkov, K., Kunev, B. et al. Structure and Diamagnetic Properties of (Pb0.6SnyCu0.4 − y)Sr2(Y1 − xCax)Cu2Oz . Journal of Superconductivity 14, 713–717 (2001). https://doi.org/10.1023/A:1013251911213

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  • DOI: https://doi.org/10.1023/A:1013251911213

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