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New Pb-based Superconductor with the 1222 Structure in the (Pb0.75P0.25)Sr2(Eu1.9−x Ce x Sr0.1)Cu2O z System

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An Erratum to this article was published on 10 August 2011

Abstract

New Pb-based 1222 cuprates containing phosphorus have been synthesized in the (Pb,P)Sr2(Eu,Ce,Sr)2 Cu2O z system. From X-ray powder diffraction study, almost the single 1222 phase samples are found to be obtained in a considerable wide composition area of 0.3≤x≤1.2 for the nominal composition of (Pb0.75P0.25)Sr2(Eu1.9−x Ce x Sr0.1) Cu2O z . The crystal structure for each sample has a tetragonal symmetry and the typical lattice parameters are a=0.3851 nm and c=2.922 nm. After annealing under 143 atm O2 atmosphere at 400 °C, a sample with x=0.3 among the almost-single phase samples shows an onset of resistivity-drop at the highest temperature of about 22 K and zero-resistivity at the highest temperature of about 12 K, then this sample also shows an onset of diamagnetic signal at about 20 K. These phenomena are found to originate from superconductivity of the new 1222 phase.

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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

    H. Sasakura & Y. Akagi

  2. Department of Physics, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan

    M. Tanaka

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

    S. Tsukui & M. Adachi

Authors
  1. H. Sasakura
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  2. Y. Akagi
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  3. M. Tanaka
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  4. S. Tsukui
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  5. M. Adachi
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Correspondence to H. Sasakura.

Additional information

An erratum to this article can be found at http://dx.doi.org/10.1007/s10948-011-1282-6

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Sasakura, H., Akagi, Y., Tanaka, M. et al. New Pb-based Superconductor with the 1222 Structure in the (Pb0.75P0.25)Sr2(Eu1.9−x Ce x Sr0.1)Cu2O z System. J Supercond Nov Magn 24, 1623–1626 (2011). https://doi.org/10.1007/s10948-010-1068-2

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  • DOI: https://doi.org/10.1007/s10948-010-1068-2

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