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Synthesis of new members of Pb-based 1222 superconductors containing sulfur: (Pb0.75S0.25)Sr2(RE1.6Ce0.4)Cu2O z (RE = Sm, Gd, Dy, and Ho)

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Abstract

We have discovered new members of the Pb-based 1222 layered cuprates containing sulfur of (Pb0.75S0.25)Sr2(RE1.6Ce0.4)Cu2O z with RE = Sm, Gd, Dy, and Ho. All the samples are of almost-single 1222 phase. From the ρ–T and χ–T measurements, they are found to be superconductors after annealing under 125 atm O2 atmosphere at 400 °C. Among them, the sample with RE = Gd is found to show superconductivity at the highest temperature of 30 K.

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Acknowledgments

The authors thank Professor Shoji Yamanaka of Hiroshima University for his cooperation on the chemical analysis.

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Authors and Affiliations

  1. Department of Physics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu-shi, Shizuoka, 431-3192, Japan

    Hiroyuki Sasakura & Yoshiya Akagi

  2. Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8527, Japan

    Masashi Tanaka

  3. Department of Chemical Engineering, Graduate School of Engineering, Osaka Prefecture University, Naka-ku, Sakai-shi, Osaka, 599-8531, Japan

    Shigeki Tsukui & Motoaki Adachi

Authors
  1. Hiroyuki Sasakura
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  2. Yoshiya Akagi
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  3. Masashi Tanaka
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  4. Shigeki Tsukui
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  5. Motoaki Adachi
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Correspondence to Hiroyuki Sasakura.

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Sasakura, H., Akagi, Y., Tanaka, M. et al. Synthesis of new members of Pb-based 1222 superconductors containing sulfur: (Pb0.75S0.25)Sr2(RE1.6Ce0.4)Cu2O z (RE = Sm, Gd, Dy, and Ho). J Mater Sci: Mater Electron 25, 2183–2187 (2014). https://doi.org/10.1007/s10854-014-1857-7

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  • DOI: https://doi.org/10.1007/s10854-014-1857-7

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