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Journal of Superconductivity and Novel Magnetism

, Volume 25, Issue 2, pp 245–248 | Cite as

New Members of the Pb-based 1222 Superconductor Containing Phosphorus: (Pb0.75P0.25)Sr2(Ln1.9−x Ce x Sr0.1)Cu2O z (Ln=Sm and Gd)

  • Hiroyuki Sasakura
  • Yoshiya Akagi
  • Masashi Tanaka
  • Shigeki Tsukui
  • Motoaki Adachi
Original Paper

Abstract

We previously reported on the synthesis of new Pb-based 1222 superconductor containing phosphorus in the (Pb0.75P0.25)Sr2(Eu1.9−x Ce x Sr0.1)Cu2O z system. Recently, we have discovered new members of the Pb-based 1222 superconductor containing phosphorus in the (Pb0.75P0.25)Sr2(Ln1.9−x Ce x Sr0.1)Cu2O z (Ln=Sm and Gd) systems. In each system, it is found that the samples of almost the single 1222 phase can be obtained for a wide composition area of 0.3≤x≤1.0. After annealing under 143 atm O2 atmosphere at 400 °C, each sample of Ln=Sm and Gd with x=0.3 is found to show an onset of resistivity-drop at about 28 K and at about 24 K, respectively. Moreover, each samples of Ln=Sm and Gd is found to show an onset of diamagnetic signal at about 25 K and about 22 K, respectively. From these facts, these samples of Ln=Sm and Gd are found to be new members of the Pb-based 1222 superconductor containing phosphorus.

Keywords

New Pb-based 1222 phase Phosphorus containing Superconductivity (Pb0.75P0.25)Sr2(Ln1.9−xCexSr0.1)Cu2Oz (Ln=Sm and Gd) 

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References

  1. 1.
    Adachi, S., Inoue, O., Kawashima, S., Adachi, H., Ichikawa, Y., Setsune, K., Wasa, K.: Physica C 168, 1 (1990) ADSCrossRefGoogle Scholar
  2. 2.
    Maeda, T., Sakuyama, K., Koriyama, S., Ichinose, A., Yamauchi, H., Tanaka, S.: Physica C 169, 133 (1990) ADSCrossRefGoogle Scholar
  3. 3.
    Min, J., Liang, J., Wang, C., Wu, F., Chen, H., Dong, C., Rao, G.: J. Phys., Condens. Matter 7, 5982 (1995) ADSCrossRefGoogle Scholar
  4. 4.
    Luo, H.M., Qu, B., Chen, Z.Y., Qian, Y.T., Yang, L.: Physica C 270, 253 (1996) ADSCrossRefGoogle Scholar
  5. 5.
    Sasakura, H., Akagi, Y., Tsukui, S., Adachi, M.: J. Supercond. Nov. Magn. 21, 249 (2008) CrossRefGoogle Scholar
  6. 6.
    Sasakura, H., Akagi, Y., Tsukui, S., Adachi, M.: J. Supercond. Nov. Magn. 22, 755 (2009) CrossRefGoogle Scholar
  7. 7.
    Sasakura, H., Akagi, Y., Tsukui, S., Tanaka, M.: Adachi, M.: J. Supercond. Nov. Magn. 24, 1623 (2011) CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Hiroyuki Sasakura
    • 1
  • Yoshiya Akagi
    • 1
  • Masashi Tanaka
    • 2
    • 3
  • Shigeki Tsukui
    • 4
  • Motoaki Adachi
    • 4
  1. 1.Department of PhysicsHamamatsu University School of MedicineHamamatsuJapan
  2. 2.Department of PhysicsShizuoka UniversityShizuokaJapan
  3. 3.Department of Applied Chemistry, Graduate School of EngineeringHiroshima UniversityHiroshimaJapan
  4. 4.Department of Chemical Engineering, Graduate School of EngineeringOsaka Prefecture UniversitySakaiJapan

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