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Synthesis of New Superconducting Pb-Based 1222 Cuprates Containing Sulfur in the (Pb0.75S0.25)Sr2(Eu2.0−x Ce x )Cu2O z System

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Abstract

We have synthesized new Pb-based 1222 cuprates containing sulfur in the (Pb0.75S0.25)Sr2(Eu2.0−x Ce x )Cu2O z system. X-ray diffraction study shows that almost the single 1222 phase samples can be obtained for a considerable wide area of 0.3≤x≤1.2 in the composition of (Pb0.75S0.25)Sr2(Eu2.0−x Ce x )Cu2O z . Next, the sample with x=0.4 after annealing under high-pressure O2 is discovered to show an onset of the resistivity drop at about 31 K and to show an onset of diamagnetic signal at about 29 K. These phenomena clearly indicate that the sample is a new superconductor.

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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 Superconducting Pb-Based 1222 Cuprates Containing Sulfur in the (Pb0.75S0.25)Sr2(Eu2.0−x Ce x )Cu2O z System. J Supercond Nov Magn 26, 589–592 (2013). https://doi.org/10.1007/s10948-012-1799-3

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  • DOI: https://doi.org/10.1007/s10948-012-1799-3

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