Advertisement

Superconducting Properties of Ag and Sb Substitution on Low-Density YBa2Cu3O δ Superconductor

  • H. Azhan
  • F. Fariesha
  • S. Y. S. Yusainee
  • K. Azman
  • S. Khalida
Original Paper

Abstract

The effects of silver (Ag) and antimony (Sb) substitution on low-density YBa2Cu3O δ (YBCO) superconductor were investigated. Two series of sample with a nominal composition of YBa2−x Ag x Cu3O δ and YBa2−x Sb x Cu3O δ where x=0.05, 0.10, 0.15, 0.20, 0.30, 0.40 and 0.50 were synthesized and characterized. All Ag-doped samples showed metallic behavior at the normal state and T C onset was found at 90 K. T C zero decreased as the Ag concentration increased. Optimum Ag concentration was achieved at x=0.20 where T C zero has the highest value of 87 K and J C at 70 K is 16.50 A/cm2. For Sb-doped case with x≤0.30, the samples showed metallic behavior above T C onset while semiconducting behavior was shown for x≥0.40. The optimum Sb concentration was achieved at x=0.15 where T C zero is 85 K and J C value measured at 70 K is 2.75 A/cm2. T C onset and T C zero were found to decrease toward higher Sb concentration. The crystallographic structure transformed to tetragonal in Sb-doped samples of x≥0.30 while other samples remain orthorhombic.

Keywords

Superconductor YBCO Ag-doped Sb-doped 

Notes

Acknowledgements

The authors wish to thank the Ministry of Higher Education (MOHE) Malaysia through Exploratory Research Grant Scheme (ERGS) for the financial support.

References

  1. 1.
    Huhtinen, H., Awana, V.P.S., Gupta, A., Kishan, H., Laiho, R., Narlikar, A.V.: Pinning centres, and enhancement of critical current density in YBCO doped with Pr, Ca and Ni. Supercond. Sci. Technol. 20, S159–S166 (2007) ADSCrossRefGoogle Scholar
  2. 2.
    Azhan, H., Azman, K., Yusainee, S.Y.S.: The role of antimony (Sb) addition on BSCCO superconductor. J. Sol. St. Sci. Technol. 17(1), 215–221 (2009) Google Scholar
  3. 3.
    Yamazaki, S.: Method for producing a superconducting pattern by doping impurities. US patent 5,098,884 (1992) Google Scholar
  4. 4.
    Blackstead, H.A., Dow, J.D.: Pair-breaking by Ba-site magnetic dopants in superconducting NdBa2Cu3Ox. Solid State Commun. 96, 313–316 (1995) ADSCrossRefGoogle Scholar
  5. 5.
    Svistunov, V.M., Tarenkov, V.Y., D’yachenko, A.I., Chernyak, O.I., Aoki, R.: Contact phenomena in Ag-YBCO composites. Physica C 303, 177–184 (1998) ADSCrossRefGoogle Scholar
  6. 6.
    Botelho, D.F., Lisboa-Filho, P.N., Araujo-Moreira, F.M.: Bulk critical current density dependence on the doping content in Y1−xSbxBa2Cu3O7−d. J. Magn. Magn. Mater. 226–230, 296–297 (2001) CrossRefGoogle Scholar
  7. 7.
    Wu, X.S., Wang, F.Z., Nie, S., Liu, J.S., Yang, L., Jiang, S.S.: Structure and superconductivity in YBa2Cu3Oy with additives of NaNO3 and NaCl. Physica C 339, 129–136 (2000) ADSCrossRefGoogle Scholar
  8. 8.
    Tepe, M., Avci, I., Kocoglu, H., Abukay, D.: Investigation of the variation in weak-link profile of YBa2Cu3−xAgxO7−δ superconductors by Ag doping concentration. Solid State Commun. 131, 319–323 (2004) ADSCrossRefGoogle Scholar
  9. 9.
    Pysarenko, S.V., Pan, A.V., Dou, S.X.: Influence of Ag-doping and thickness on superconducting properties of YBa2Cu3O7 film. Physica C 460–462, 1363–1364 (2007) CrossRefGoogle Scholar
  10. 10.
    Dong, H.H., Byon, S., Kim, Y.-I.: Correction of impurity effects on the characterization of YBCO superconductor. Physica C 333, 72–78 (2000) ADSCrossRefGoogle Scholar
  11. 11.
    Meeks, H.S., Rele, S.V.: Rapid production of bulk shapes with improves physical and superconducting properties. US patent 4,975,414 (1990) Google Scholar
  12. 12.
    Akhtar, M.J., Shaheen, R., Haque, M.N., Bashir, J., Akhter, J.I.: Synthesis and characterization of YBa2Cu3−xSbxO7−δ high-temperature superconductors. Supercond. Sci. Technol. 13, 1612–1620 (2000) ADSCrossRefGoogle Scholar
  13. 13.
    Gokhfeld, D.M., Balaev, D.A., Popkov, S.I., Shaykhutdinov, K.A., Petrov, M.I.: Magnetization loop and critical current of porous Bi-based HTS. Physica C 434, 135–137 (2006) ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • H. Azhan
    • 1
  • F. Fariesha
    • 2
  • S. Y. S. Yusainee
    • 3
  • K. Azman
    • 1
  • S. Khalida
    • 4
  1. 1.Faculty of Applied SciencesUniversiti Teknologi MARA PahangBandar JengkaMalaysia
  2. 2.Faculty of Applied SciencesUniversiti Teknologi MARA PerakTapah RoadMalaysia
  3. 3.Faculty of Applied SciencesUniversiti Teknologi MARAShah AlamMalaysia
  4. 4.International Education College (INTEC)Shah AlamMalaysia

Personalised recommendations